Calculators & tools
240 free tools for money, health, math and everyday questions. Each one answers instantly in your browser, explains its formula, and includes a worked example you can check.
No calculators match that search.
- Financial calculators83 tools · borrowing & debt, home buying, saving & investing, retirement
- Fitness & health calculators29 tools · body & weight, diet & nutrition, fitness, pregnancy & fertility
- Math calculators44 tools · basic math, algebra & numbers, geometry, statistics & probability
- Other calculators & tools56 tools · date & time, home & construction, everyday life, science & engineering
- PDF tools25 tools · organize PDF, optimize PDF, convert to PDF, convert from PDF
- Video downloaders3 tools · youtube downloaders, tiktok, instagram & facebook
Borrowing & debt
Loan payments, interest, leases and plans to clear your debt.
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Loan Calculator
Monthly payment, total interest and a full amortization schedule, plus what extra payments save.
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Car Loan Calculator
Your real monthly car payment after down payment, trade-in and sales tax, and the cost of longer terms.
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Credit Card Payoff Calculator
How long a card balance takes to clear and the interest you pay, at a fixed payment or a target date.
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Debt Payoff Calculator
Compare the snowball and avalanche methods across all your debts and see your debt-free date.
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Payment Calculator
Monthly payment for a loan with a fixed term, or how long a fixed monthly payment takes to clear it.
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Amortization Calculator
Loan amortization schedule by year, with the payoff date and what an extra monthly payment saves.
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Interest Rate Calculator
Find the annual interest rate hidden in a loan from the amount, the term and the monthly payment.
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Personal Loan Calculator
Monthly payment, total cost and true APR of a personal loan, including an origination fee.
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Student Loan Calculator
Monthly student loan payment, total interest and payoff time, with extra payments or a debt-free goal.
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Business Loan Calculator
Business term loan payments monthly, biweekly or weekly, with total interest, fees and the true APR.
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Boat Loan Calculator
Monthly boat loan payment, amount financed and total cost, with down payment, trade-in, sales tax and fees.
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Debt Consolidation Calculator
Compare up to four debts with one consolidation loan: monthly payment, total interest, payoff time.
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Repayment Calculator
How long a balance takes to repay at a fixed payment, or the payment that clears it by your deadline.
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APR Calculator
True annual percentage rate of a loan once upfront fees and points are included, paid in cash or financed.
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Cash Back or Low Interest Calculator
Should you take the dealer's cash-back rebate or the low-interest financing? See which costs less.
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Auto Lease Calculator
Monthly car lease payment from price, MSRP, residual value, money factor or APR, term and sales tax.
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Lease Calculator
Lease payment for any asset from its value, residual, term and rate, or the interest rate hidden in a payment.
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Debt-to-Income Ratio Calculator
Your front-end and back-end debt-to-income ratios, compared with common mortgage lender limits.
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Pakistan Car Loan Calculator
Monthly instalment, markup and total cost of car financing in Pakistan, with KIBOR, insurance and SBP limits.
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Mortgage Calculator
Your full monthly housing cost, including property tax, insurance, PMI and HOA fees.
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Home Affordability Calculator
How much house your income supports under the 28/36 rule, with your debts and down payment.
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Refinance Calculator
Whether refinancing pays off: new payment, monthly savings, break-even month and lifetime interest.
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Rent vs Buy Calculator
Compare the true cost of renting and buying over the years you plan to stay, including opportunity cost.
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Mortgage Payoff Calculator
See how extra payments, a lump sum or biweekly payments cut years and interest off your mortgage.
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Rent Calculator
How much rent you can afford, from the 30% rule, the landlord 40× income test and a 50/30/20 budget.
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FHA Loan Calculator
FHA mortgage payment with upfront and annual MIP, property tax and insurance, using HUD's current premium rates.
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VA Mortgage Calculator
VA home loan payment with the current VA funding fee, first or subsequent use, exemptions, taxes and insurance.
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Mortgage Amortization Calculator
A month-by-month mortgage schedule with dates, PMI until 78% LTV, taxes and insurance, extra payments and a yearly summary.
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Down Payment Calculator
Your down payment, loan, LTV and cash to close for a home price, or how long it will take to save the down payment.
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Rental Property Calculator
Cash flow, NOI, cap rate, cash-on-cash return and the 1% rule for a rental property you're thinking of buying.
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Home Equity Loan Calculator
How much equity you can borrow against your home, and the fixed monthly payment on a home equity loan.
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HELOC Calculator
HELOC payments during the interest-only draw period and the repayment period, the payment jump and total interest.
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Real Estate Calculator
A home as an investment: equity built, total paid, cash in hand if you sell, and your net gain after all costs.
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UK Mortgage Calculator
Monthly mortgage payments in pounds, repayment or interest-only, with Stamp Duty for England and Northern Ireland.
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Canadian Mortgage Calculator
Canadian mortgage payments with semi-annual compounding, CMHC insurance and monthly, bi-weekly or weekly payments.
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Pakistan Home Loan Calculator
Monthly instalment, total markup and a yearly table for house financing in Pakistan, with KIBOR, takaful and SBP limits.
Saving & investing
Interest, returns and how your savings grow over time.
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Compound Interest Calculator
How a starting balance and monthly contributions grow, with any compounding frequency.
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Savings Goal Calculator
How much to save each month to reach a goal by a date, or how long your current savings will take.
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Inflation Calculator
What money will cost in the future, and what today's savings will really be worth.
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Simple Interest Calculator
Interest on a principal at a flat annual rate for any number of years, months or days.
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Investment Calculator
Project an investment's end value, or find the contribution, return, starting amount or time a target needs.
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Interest Calculator
Interest earned on a balance with regular deposits, any compounding, tax on interest and inflation.
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ROI Calculator
Return on investment as a percentage, the gain or loss, and the annualized ROI from a length or two dates.
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CD Calculator
What a certificate of deposit is worth at maturity, from its APY or interest rate, term and your tax rate.
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Savings Calculator
How a savings account grows with regular deposits that rise each year, at your APY and after tax.
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Future Value Calculator
What a sum today plus regular payments grows to, with any compounding and payments at the start or end.
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Present Value Calculator
What a future sum, or a stream of regular payments, is worth today at a given discount rate.
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Finance Calculator
Time value of money: solve for N, I/Y, PV, PMT or FV, like a financial calculator, with simple sign rules.
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IRR Calculator
Internal rate of return, NPV and payback period for an investment and a series of yearly or monthly cash flows.
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Bond Calculator
Bond price from yield or yield to maturity from price, with current yield, accrued interest and duration.
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Average Return Calculator
Arithmetic and geometric average returns from yearly results, or the CAGR from a start and end value.
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College Cost Calculator
Project what college will cost when your child enrolls, your savings shortfall and the monthly saving to close it.
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Mutual Fund Calculator
What a mutual fund investment grows to after its expense ratio and front-end load, and what the fees cost.
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Budget Calculator
See what's left of your monthly take-home pay after expenses and savings, and how you compare with the 50/30/20 rule.
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Zakat Calculator
Zakat at 2.5% on your cash, gold, silver and business wealth in rupees, with the silver or gold nisab.
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Islamic Inheritance Calculator (Wirasat)
Divide an estate by Quran and Hadith: shares for spouse, children, parents and siblings, in English, Urdu and Arabic.
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Gold Calculator
Value of gold in rupees from its weight in tola, grams, masha or ratti and its karat, with making charges and resale.
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Retirement Calculator
See what your savings grow to by retirement, how long they last, and how much more to save each month.
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401(k) Calculator
Project your 401(k) balance with your employer match, salary raises and the 2026 IRS contribution limits.
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Social Security Calculator
Your monthly Social Security benefit at every claiming age from 62 to 70, with full retirement age and break-even ages.
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Roth IRA Calculator
Project your tax-free Roth IRA balance with the 2026 contribution limits and compare it with a taxable account.
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IRA Calculator
Traditional IRA, Roth IRA or taxable account? Compare the after-tax value of each from the same pre-tax savings.
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RMD Calculator
Your required minimum distribution from an IRA or 401(k) for any year, using the IRS Uniform Lifetime Table.
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Pension Calculator
Lump sum or monthly pension? Compare the present value of the payments with the lump sum and find your break-even age.
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Annuity Calculator
What an annuity or savings plan grows to from a starting principal plus yearly or monthly additions.
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Annuity Payout Calculator
The monthly income a lump sum can pay for a set number of years, or how long a chosen payment will last.
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Pakistan Salary Tax Calculator
Income tax on your salary for tax year 2026-27 under the Finance Act 2026, monthly and yearly, with take-home pay.
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Income Tax Calculator
Estimate your 2026 US federal income tax, tax bracket and effective rate for any filing status.
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Take-Home Paycheck Calculator
Your net pay per paycheck after 2026 federal tax, Social Security, Medicare, state tax and 401(k) deductions.
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Salary Calculator
Convert pay between hourly, daily, weekly, biweekly, semi-monthly, monthly and annual, with or without days off.
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Sales Tax Calculator
Add sales tax to a price, take it back out of a total, or find the rate from a receipt.
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Marriage Tax Calculator
Find out whether getting married raises or lowers your federal income tax, using the 2026 brackets.
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Estate Tax Calculator
Estimate the US federal estate tax for deaths in 2026, with the $15 million exclusion, gifts and portability.
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VAT Calculator
Add VAT to a net price or remove it from a gross price, with standard rates for the UK, EU, Gulf and South Africa.
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Commission Calculator
Sales commission at a flat rate or in tiers, plus total pay with a base salary and the sales needed to hit a target.
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Real Estate Commission Calculator
The total commission on a home sale, how it splits between agents and brokerages, and what the seller keeps.
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Invoice Generator
Make a professional invoice in a minute: line items, tax, discount and balance due, downloaded as a PDF.
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Currency Converter
Convert between 44 currencies, including PKR, AED and SAR, at today's mid-market exchange rates.
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Depreciation Calculator
Depreciation schedules by straight-line, declining balance or sum-of-the-years' digits, with book value each year.
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Margin Calculator
Gross profit, margin and markup from cost and price, or the selling price you need for a target margin or markup.
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Discount Calculator
Final price after a percent or dollar discount, with an optional second stacked discount and sales tax.
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Payback Period Calculator
How many years an investment takes to pay for itself, with simple and discounted payback and a cumulative table.
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Percent Off Calculator
Quick sale price for any percent off, the amount you save, and the total with sales tax.
Body & weight
BMI, body fat and a healthy weight for your height.
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BMI Calculator
Your body mass index, weight category and healthy weight range, in metric or US units.
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Body Fat Calculator
Estimate your body fat percentage with the U.S. Navy tape method and compare it with a BMI-based estimate.
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Ideal Weight Calculator
Ideal body weight from the Robinson, Miller, Devine and Hamwi formulas, next to the healthy BMI range.
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Army Body Fat Calculator
Check the U.S. Army's current body composition standard: a waist-to-height ratio below 0.55.
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Lean Body Mass Calculator
Lean body mass from your height and weight with the Boer, James and Hume formulas, plus the body fat each implies.
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Healthy Weight Calculator
The healthy weight range for your height, where your weight sits, and how far you are from the range.
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Overweight Calculator
Check whether a weight is overweight for its height, how much above the healthy range it is, and your waist-to-height ratio.
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Body Type Calculator
Find your body shape (hourglass, pear, rectangle, inverted triangle and more) from four tape measurements.
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Body Surface Area Calculator
Body surface area in square meters from height and weight, with the Mosteller, Du Bois, Haycock, Gehan & George and Boyd formulas.
Diet & nutrition
Calories, macros, protein and your daily energy needs.
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Calorie Calculator
Daily calories to maintain your weight, plus gradual targets for losing or gaining, using the Mifflin-St Jeor equation.
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BMR Calculator
Your basal metabolic rate from the Mifflin-St Jeor, revised Harris-Benedict and Katch-McArdle equations.
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TDEE Calculator
Total daily energy expenditure: your BMR multiplied by your activity level, with every level side by side.
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Macro Calculator
Split your daily calories into grams of protein, carbs and fat, with preset or custom percentages and grams per meal.
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Carbohydrate Calculator
How many grams of carbohydrate a day fit 45–65% of your calories, with low, middle and high levels and grams per meal.
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Protein Calculator
Daily protein in grams from your body weight, from the RDA minimum to targets for older adults and people who train.
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Fat Intake Calculator
How many grams of fat a day fit 20–35% of your calories, and your saturated fat limit of 10%.
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Pace Calculator
Running pace, finish time or distance in km or miles, with race presets, splits and equivalent race times.
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Calories Burned Calculator
Calories burned in 40 common activities from your weight and the time spent, using MET values from the 2024 Compendium.
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One Rep Max Calculator
Estimate your one-rep max from a set of up to 12 reps with five formulas, plus a percentage table for training loads.
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Target Heart Rate Calculator
Your maximum heart rate, target exercise range and five training zones, by 220 − age, Tanaka or the Karvonen method.
Pregnancy & fertility
Due dates, ovulation, cycles and pregnancy weeks.
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Pregnancy Calculator
How many weeks pregnant you are, your due date, trimester and key milestones, from your last period, conception, ultrasound or IVF.
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Due Date Calculator
Your estimated due date by Naegele's rule, adjusted for cycle length, or from a conception or IVF transfer date.
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Pregnancy Weight Gain Calculator
Recommended pregnancy weight gain for your pre-pregnancy BMI, one baby or twins, and the expected range for your week.
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Pregnancy Conception Calculator
Estimate your conception date and fertile window from your last period or due date, with the early pregnancy timeline.
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Ovulation Calculator
Your estimated ovulation date and fertile window for the next 6 cycles, from your last period and cycle length.
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Conception Calculator
Count back from a due date or birth date to the likely conception date, with an honest range of uncertainty.
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Period Calculator
Predict your next 6 periods and the fertile days in each cycle from your last period, cycle length and period length.
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GFR Calculator
Estimate kidney function (eGFR) from a creatinine blood test with the race-free 2021 CKD-EPI equation, and see the GFR category.
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BAC Calculator
A rough estimate of blood alcohol content from your drinks, weight and time, using the Widmark formula. Never use it to decide whether to drive.
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Scientific Calculator
Free online scientific calculator with trig in degrees or radians, logs, powers, roots, factorials, memory and history.
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Percentage Calculator
Percent of a number, what percent one number is of another, percentage change and difference.
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Basic Calculator
A simple online calculator for everyday sums: add, subtract, multiply, divide, percent, memory and a tape.
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Fraction Calculator
Add, subtract, multiply and divide fractions and mixed numbers, simplify fractions and turn decimals into fractions.
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Average Calculator
The mean of a list of numbers with the working shown, plus a weighted average for grades and scores.
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Ratio Calculator
Simplify ratios, solve A : B = C : D for a missing value, scale a ratio or split a total, with fractions and percentages.
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Percent Error Calculator
How far a measured value is from the accepted value, as a percent error with the sign and the working shown.
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Rounding Calculator
Round to decimal places, significant figures, the nearest 10, 100 or 1,000, or the nearest fraction, with six rounding rules.
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Exponent Calculator
Raise any number to any power, including negative and fractional exponents, or solve for the exponent or the base.
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Root Calculator
Square roots, cube roots and any nth root, with the simplified radical form such as √72 = 6√2.
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Log Calculator
Logarithms in base 10, base e (ln), base 2 or any base, and solve log equations for x or for the base.
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Scientific Notation Calculator
Convert numbers to scientific, E and engineering notation and back, and add, subtract, multiply or divide in a × 10ⁿ form.
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Long Division Calculator
Long division with every step shown: quotient, remainder and the decimal answer with repeating digits marked.
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Big Number Calculator
Exact arithmetic on whole numbers with hundreds or thousands of digits: add, multiply, divide, powers, factorials and GCD.
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Quadratic Formula Calculator
Solve ax² + bx + c = 0 with exact and decimal roots, the discriminant, vertex and factored form.
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Prime Factorization Calculator
Break a number into prime factors with exponents, see the factor tree, check if it is prime and count its divisors.
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Factor Calculator
Every factor and factor pair of a whole number, with the count, the sum and prime, perfect or abundant checks.
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GCF Calculator
Greatest common factor of two or more whole numbers, with Euclid's algorithm and a prime factorization check.
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LCM Calculator
Least common multiple of two or more whole numbers, worked out by prime factorization and by the GCF method.
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Matrix Calculator
Add, subtract and multiply matrices up to 6 × 6, or find the determinant, inverse, transpose and rank.
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Number Sequence Calculator
The nth term, sum and list of terms for arithmetic, geometric and Fibonacci-like sequences, or find the pattern.
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Common Factor Calculator
Every factor shared by two or more whole numbers, with the greatest common factor and each number's factor list.
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Binary Calculator
Add, subtract, multiply and divide binary numbers, run AND, OR, XOR and NOT, and convert binary, octal, decimal and hex.
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Hex Calculator
Hexadecimal arithmetic, hex to decimal and binary conversion, and two's complement for 8, 16, 32 and 64-bit numbers.
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Random Number Generator
Pick random whole numbers or decimals in any range, one or thousands at a time, with or without repeats.
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Half-Life Calculator
Radioactive decay and other exponential decay: find the amount left, the starting amount, the time or the half-life.
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Triangle Calculator
Solve any triangle from three sides or angles: missing sides and angles, area, perimeter, heights and radii.
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Right Triangle Calculator
Enter any two of the legs, hypotenuse, angles or area to solve a right triangle completely.
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Pythagorean Theorem Calculator
Find the hypotenuse or a missing leg of a right triangle with a² + b² = c², shown step by step.
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Circle Calculator
Radius, diameter, circumference and area from any one of them, plus arc length and sector area for an angle.
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Slope Calculator
Slope of a line from two points, or its equation from a point and a slope, with intercepts, angle and distance.
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Distance Calculator
Straight-line distance between 2D or 3D points, or the great-circle distance between two places on Earth.
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Area Calculator
Area of a square, rectangle, triangle, circle, ellipse, trapezoid, parallelogram, sector or regular polygon.
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Volume Calculator
Volume of a cube, box, cylinder, cone, sphere, pyramid, capsule or tube, in cubic units, liters and gallons.
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Surface Area Calculator
Lateral and total surface area of a cube, box, cylinder, cone, sphere, pyramid, capsule or tube.
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Standard Deviation Calculator
Sample and population standard deviation, variance and mean of a list of numbers, with every step shown.
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Statistics Calculator
Descriptive statistics for a list: mean, median, mode, quartiles, IQR, outliers, variance, SD and skewness.
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Mean, Median, Mode & Range Calculator
The mean, median, mode and range of a list of numbers, with the sorted list and each step explained.
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Sample Size Calculator
How many survey responses you need for a given confidence level and margin of error, or the margin for your sample.
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Probability Calculator
P(A and B), P(A or B) and P(not A) for independent events, at least one success in n tries, and binomial odds.
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Permutation and Combination Calculator
nPr and nCr, with or without repetition, as exact whole numbers even when they run to thousands of digits.
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Z-Score Calculator
The z-score and percentile of a value, the probability between two values, and the value at any percentile.
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Confidence Interval Calculator
Confidence interval and margin of error for a mean (t or z) or a proportion, at any confidence level.
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P-Value Calculator
p-value from a z-score, t-score or chi-square statistic, one- or two-tailed, with significance at 0.05 and 0.01.
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Age Calculator
Your exact age in years, months and days, with totals in weeks, days and hours and the date of your next birthday.
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Date Calculator
Add or subtract years, months, weeks and days from a date, or count the days and weekdays between two dates.
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Time Calculator
Add or subtract days, hours, minutes and seconds from a time, combine two durations, or convert between time units.
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Hours Calculator
Hours worked between a start and end time, minus an unpaid break, in hours and minutes and in decimal hours.
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Time Card Calculator
Weekly time sheet for Monday to Sunday with breaks, overtime after 40 hours and total pay at your hourly rate.
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Time Zone Calculator
Convert a date and time between world time zones, with daylight saving applied, and see the same moment in 40+ cities.
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Time Duration Calculator
The exact time between two dates and times, in days, hours and minutes, with totals in every unit.
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Day Counter
Count the days or weekdays between two dates, with or without the end date, or count down the days to an event.
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Day of the Week Calculator
The weekday for any date from the year 1 to 9999, worked out step by step with Zeller's congruence and the Doomsday rule.
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Sleep Calculator
Bedtimes or wake-up times that fit whole 90-minute sleep cycles, with 4, 5 or 6 cycles and time to fall asleep.
Home & construction
How much concrete, gravel, roofing or tile to buy.
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Concrete Calculator
Concrete for slabs, footings, round columns, circular pads and steps, in cubic yards or m³, plus bags needed.
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Square Footage Calculator
Add up the area of up to six rectangles, circles, triangles, trapezoids or L-shapes in sq ft or m², with cost.
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Stair Calculator
Number of steps, riser height, total run, stringer length and angle, checked against US IRC stair limits.
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Roofing Calculator
Roof area from the house footprint and pitch, with squares, shingle bundles, underlayment rolls and cost.
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Tile Calculator
How many floor or wall tiles and boxes to buy, allowing for grout joints, layout waste and cost per box.
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Mulch Calculator
Cubic yards, cubic feet or m³ of mulch for a garden bed, plus how many 2 or 3 cu ft bags to buy.
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Gravel Calculator
Volume and weight of gravel, crushed stone, sand or topsoil for an area and depth, in tons or tonnes, with cost.
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BTU Calculator
Rule-of-thumb air conditioner size in BTU/h and tons for a room, with a rough heating estimate.
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GPA Calculator
Semester and cumulative GPA on the 4.0 scale with plus and minus grades, for up to 10 courses.
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Electricity Bill Calculator
Estimate your Pakistan electricity bill from units used, with protected and non-protected slabs, FCA, fixed charges and GST.
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Grade Calculator
Your weighted course grade from category weights and scores, and the score you need on the final exam.
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Height Calculator
Predict a child's adult height from the parents' heights with the mid-parental method, or convert height between cm and feet.
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Tip Calculator
Work out the tip and total on a bill, split it between several people, and round each share up if you like.
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Bra Size Calculator
Estimate your bra size from underbust and bust measurements, in US, UK, EU, French and Australian sizes.
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Shoe Size Conversion
Convert shoe sizes between US men's, women's and kids', UK, EU and Japan, or find your size from foot length.
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Love Calculator
A just-for-fun compatibility score for two names. Same names, same score, every time.
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Golf Handicap Calculator
Your World Handicap System index from recent rounds, plus your course handicap for any set of tees.
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Dice Roller
Roll any number of d4, d6, d8, d10, d12, d20, d100 or custom dice with a modifier, and see the odds of your total.
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Unit Conversion Calculator
Convert length, weight, temperature, area, volume, speed, time, data, pressure, energy, power and fuel economy.
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Roman Numeral Converter
Convert numbers to Roman numerals and back, with the working shown and checks for badly formed numerals.
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Fuel Cost Calculator
The fuel cost of a road trip from distance, fuel economy and price, with round trips and cost per person.
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Gas Mileage Calculator
Your car's real fuel economy in mpg (US and UK), L/100 km and km/L from two fill-ups, plus cost per mile.
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Mileage Reimbursement Calculator
Mileage reimbursement at the 2026 IRS rates for business, medical and charity driving, or your own rate per mile.
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Tire Size Calculator
Compare two tire sizes: diameter, sidewall, circumference, revolutions per mile and the speedometer difference.
Science & engineering
Physics, chemistry, electricity and the weather.
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Ohm's Law Calculator
Enter any two of voltage, current, resistance and power to get the other two, with the working shown.
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Voltage Drop Calculator
Voltage drop, percent drop and voltage at the load for copper or aluminum wire, AWG or mm², single- or three-phase.
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Resistor Color Code Calculator
Read 4-, 5- and 6-band resistor color codes, or find the color bands for any resistance value.
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Electricity Cost Calculator
Energy use in kWh and running cost per day, month and year for any appliance, with typical wattages.
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Horsepower Calculator
Horsepower from torque and rpm, or from force, distance and time, plus hp, PS and kW conversions.
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Engine Horsepower Calculator
Estimate engine horsepower from a quarter-mile time or trap speed and the car's weight.
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Density Calculator
Solve ρ = m ÷ V for density, mass or volume in metric or US units, with common material densities.
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Mass Calculator
Mass from density and volume, or from a weight and the gravity where it was measured, in any unit.
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Weight Calculator
Weight force W = m × g on Earth, the Moon and the planets, in newtons, pound-force and kilogram-force.
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Speed Calculator
Speed from distance and time, distance from speed and time, or time from distance and speed, in any unit.
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Molarity Calculator
Molarity from mass and volume, the mass of solute to weigh out, the volume needed, and C₁V₁ = C₂V₂ dilutions.
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Molecular Weight Calculator
Molar mass of any chemical formula, with brackets and hydrates, and the mass percent of each element.
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Wind Chill Calculator
Wind chill (feels-like) temperature with the NWS formula, in °F or °C, with the frostbite risk.
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Heat Index Calculator
Heat index (feels-like temperature) from air temperature and humidity with the NWS method, in °F or °C.
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Dew Point Calculator
Dew point from temperature and relative humidity, or humidity from temperature and dew point, in °F or °C.
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GDP Calculator
GDP from C + I + G + (X − M), real GDP with a deflator, growth between two years, and GDP per person.
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IP Subnet Calculator
Network and broadcast address, usable host range, masks and binary view for any IPv4 or IPv6 subnet.
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Bandwidth Calculator
How long a download or upload takes, how much data a connection moves, and a website's monthly bandwidth.
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Base64 Encode and Decode
Encode text to Base64 or decode Base64 back to text, with full UTF-8 support and the URL-safe variant.
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URL Encode and Decode
Percent-encode text or whole URLs, decode them back, and see any URL split into its parts and query parameters.
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Password Generator
Strong random passwords or word passphrases made in your browser, with the entropy and a strength rating for each.
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Merge PDF
Join several PDFs into one file in the order you choose, without uploading them.
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Split PDF
Cut a PDF into smaller files by page ranges, single pages or equal parts.
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Organize PDF
Reorder, turn and delete pages, add blank pages, and mix pages from several PDFs.
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Remove Pages
Delete the pages you don't need from a PDF and keep the rest.
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Extract Pages
Save the pages you pick as a new PDF, or as one PDF per page.
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PDF to JPG
Save PDF pages as JPG or PNG images at the resolution you choose.
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PDF to Excel
NewRebuild the tables in a PDF as an Excel (.xlsx) or CSV file.
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PDF to PowerPoint
NewMake a .pptx with one slide for each page of a PDF.
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PDF to Text
NewSave the text of a PDF as a .txt or Markdown file, or copy it in one click.
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Edit PDF
NewAdd text, pictures, shapes and highlights to a PDF.
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Rotate PDF
Turn all or some pages of one or more PDFs, without losing quality.
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Add page numbers
Number the pages of a PDF in the position and style you choose.
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Add watermark
Stamp text or a logo across the pages of a PDF.
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Crop PDF
Cut the margins or unwanted parts off PDF pages, without losing quality.
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PDF forms
NewFill in the boxes of a fillable PDF form and save it.
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Compare PDF
NewFind every added, removed or changed word between two versions of a PDF.
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Protect PDF
NewAdd an open password with AES-256 encryption, and optional print and copy limits.
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Unlock PDF
NewRemove a known password or print and copy limits from a PDF.
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Sign PDF
Draw, type or upload your signature and place it on a PDF.
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Redact PDF
NewBlack out private text in a PDF so it is really removed.
TikTok, Instagram & Facebook
TikTok without watermark, Instagram Reels and Facebook videos.
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TikTok Downloader Without Watermark
NewDownload TikTok videos in HD without the watermark, or save the sound as MP3.
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Instagram Reels & Video Downloader
NewSave Instagram Reels and videos from public accounts as MP4, in the best quality available.
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Facebook Video Downloader
NewDownload public Facebook videos and Reels in HD or SD quality as MP4.
How our calculators work
Our tools use standard, widely published formulas — for example the amortized payment formula for loans and mortgages, the compound interest formula for savings, and the Mifflin-St Jeor equation for calories. Calculations happen instantly on your device, so you can change any input and see the result update as you type.
Results are estimates. Real offers can differ because of fees, rounding, daily interest or variable rates, and health results are general guidance rather than medical advice, so confirm anything important with a professional. See our disclaimer. Members can save calculations to compare options over time.