APR to APY Calculator
Fill in the values and the answer updates as you type.
How the APR to APY Calculator works
APY = (1 + APR ÷ n)^n − 1, where n is how many times interest compounds per year. A 12% APR compounded monthly equals an APY of about 12.68%. More frequent compounding raises the APY slightly, so compare accounts and loans by APY rather than APR.
Inputs and results
The APR to APY Calculator takes 3 inputs and gives 4 results.
What you enter
- Nominal APR (%) — starts at 12.
- Compounding periods per year — starts at 12. Choose from: 12, 365, 52, 4, 2 and 1.
- Balance ($) — starts at 10000.
What you get
- Effective annual yield (APY)
- Extra yield from compounding
- Interest after one year
- Balance after one year
Example: APR to APY Calculator with the starting values
With nominal apr 12 %, compounding periods per year 12 and balance 10000 $, the calculator returns:
| Effective annual yield (APY) | 12.68% |
|---|---|
| Extra yield from compounding | 0.68% |
| Interest after one year | $1,268.25 |
| Balance after one year | $11,268.25 |
Change any value above and the results update straight away.
APR to APY Calculator FAQ
How do I use the APR to APY Calculator?
Enter nominal apr, compounding periods per year and balance in the fields, then read effective annual yield (apy), extra yield from compounding, interest after one year and balance after one year in the result panel. The answer updates as you type, and you can press Calculate or Enter to refresh it. Use “Copy link” to share your exact numbers with someone else.
What does the APR to APY Calculator calculate?
Convert a nominal APR into the effective annual yield. It returns effective annual yield (apy), extra yield from compounding, interest after one year and balance after one year from the 3 values you provide.
What values does the APR to APY Calculator start with?
It opens with nominal apr 12 %, compounding periods per year 12 and balance 10000 $ so you can see a working result straight away. Replace them with your own numbers, or press Reset to return to these starting values.
Is the APR to APY Calculator free and private?
Yes. It is free, needs no account, and runs in your browser, so nothing you type is sent to or stored on our servers. See the Privacy Policy for details.
Can I rely on the APR to APY Calculator for financial decisions?
Treat the result as a well-rounded estimate. Real situations often have details a general calculator cannot know, so confirm financial decisions with a qualified professional. See the Disclaimer for more.