APY Calculator
Calculate annual percentage yield (APY) from a stated rate and compounding, or from the interest actually earned over a term.
Your inputs
Results
APY
5.1267%
✓Exact calculation — rounded only for display
Inputs are never added to links for financial, salary or health calculators.
What this calculator does
APY tells you the real yearly return on a deposit including compounding. You can calculate it from a quoted rate or, like the US Truth in Savings formula, from interest earned over a term of any length.
Formula and method
Worked example
Calculated by this tool with its default inputs:
Inputs
- Calculate APY from: A stated rate and compounding
- Stated (nominal) annual rate: 5 %
- Compounding: Daily (365)
Results
- APY: 5.1267%
How to read the results
Use APY to compare savings and deposit products with different compounding or term lengths.
Assumptions and limitations
- The interest-earned method follows the formula in the US Truth in Savings regulation (Regulation DD).
Financial results are estimates based on the inputs and assumptions shown. They are not financial advice; confirm figures with your lender, provider or a qualified adviser before making decisions.
Questions
Why is APY higher than the stated rate?
Because interest is paid on earlier interest during the year.
Methodology and verification
- Result type
- Exact mathematical calculation (rounded only for display)
- Formula version
- 1.0
- Automated verification
- 4 reference and validation test cases, checked against independently computed values. The site cannot be built if any of them fail.
- Editorial review
- Awaiting human editorial review. The explanation was drafted with AI assistance; the formula and examples are verified by the automated tests above.
Privacy
Everything you enter is calculated in this browser and is not sent to Numerith or anyone else. Because this calculator can involve personal financial or health details, your inputs are never added to share links or saved to history. Privacy policy