Calcnio blog · 27 published
The blog that shows the math.
Clear, worked-out explanations of how borrowing, interest, saving and everyday numbers really work, each with real figures and a free calculator to try your own.
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Saving & investing
APY vs APR: Why Your Savings Rate Isn't What It Seems
APY vs APR explained: APR is the stated rate, while APY includes compounding. See worked examples, a conversion table and how to compare savings accounts. -
Loans
APR vs Interest Rate: What's the Difference and Which Matters?
APR vs interest rate explained with real numbers: what each includes, how fees can make a lower rate cost more, and when the lowest APR isn't the cheapest loan. -
Mortgages
15-Year vs 30-Year Mortgage: Which One Actually Saves You More?
A side-by-side comparison of 15-year and 30-year mortgages on a $320,000 loan: monthly payments, total interest, equity after 5 years, and a middle-ground option.
Run your own numbers
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