APR to APY Calculator
Convert a nominal annual percentage rate into an effective annual yield for a selected compounding frequency.
Set your values
Adjust the values, then calculate your result.
How to use APR to APY Calculator
- Enter the measurements or amounts in the fields above.
- Check that dimensions, rates and units match the labels.
- Select “Convert APR to APY” to see a clear estimate and the formula used.
How the apr to apy calculator works
APY = (1 + APR ÷ compounding periods) raised to compounding periods, minus one.
Check your measurements and assumptions
This mathematical conversion excludes fees and assumes the same nominal rate for the full year. APR conventions can differ for lending products; use the issuer’s disclosed terms.
Review the estimate before you act
Compare this result with an independent measurement, supplier quote or institution guidance when the decision matters. Confirm that the units and assumptions match the labels above, and update the inputs when the conditions change. Keep a note of the values used so you can reproduce the estimate later. This calculator is a planning aid and does not replace professional, product-specific or local guidance.
How do I convert APR to APY?
Divide the nominal annual rate by the number of compounding periods, compound for one year, and express the result as a percentage.
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Processing takes place in your browser. This tool does not send your input or selected files to a conversion API.