What the tool does, how to run it, and what to expect from the result.
Convert an annual percentage rate (APR) into the annual percentage yield (APY) for daily, monthly, quarterly or yearly compounding. The math updates instantly and runs on your device, so it is fast, private, and available offline.
A quick way to understand who this helps, what it solves, and where it connects next.
Shoppers, students, freelancers, and anyone who needs a quick, private calculation.
Fast everyday math without a spreadsheet, app install, or sign-up.
Short answers for the questions people usually have before trying a utility like this.
Yes. It is completely free, with no sign-up, no watermark, and no usage limits.
No. Amounts are currency-neutral and use the same unit across all inputs, so it works in any country.
APY = (1 + APR ÷ n)^n − 1, where n is compounding periods per year. 5% APR compounded monthly is 5.116% APY.
APY counts interest earned on interest. The more often interest compounds, the bigger the gap; with annual compounding the two are equal.
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Enter your numbers and the result updates live in your browser. Nothing is uploaded and no server is used.
Calculations run locally in your browser. Amounts are shown without a currency symbol so they work anywhere.