APY Calculator
Free APY calculator: convert an APR into annual percentage yield for any compounding frequency and see the balance and interest earned year by year.
APY Calculator — Find the Real Annual Yield of Your Savings
APY (annual percentage yield) is the return you actually earn in a year once compounding is counted. Banks usually quote a nominal annual rate (APR) and add interest monthly or quarterly, so your money grows a little faster than the headline rate suggests. This calculator converts any APR into its APY for annual, semi-annual, quarterly, monthly or daily compounding, and shows how a deposit grows year by year.
Use it to compare savings accounts, fixed deposits and other accounts that compound at different intervals: whichever has the higher APY pays more, whatever its headline rate.
How to Use the APY Calculator
1. Enter the Principal
The amount you deposit or invest at the start. Pick your currency from the list.
2. Set the Annual Rate (APR)
The nominal yearly interest rate your bank or fund quotes, before compounding.
3. Choose the Compounding
How often interest is added: annually, semi-annually, quarterly, monthly or daily.
4. Set the Period
How many years the money stays invested. You get the APY, the final balance and the interest earned, with a year-wise table and a chart.
The APY Formula, With an Example
APY = (1 + r ÷ n)n − 1, where r is the annual rate as a decimal and n is the number of times interest is compounded in a year. The balance after t years is P × (1 + r ÷ n)n × t, where P is the principal.
| 8% APR compounded | APY |
|---|---|
| Annually (n = 1) | 8.00% |
| Semi-annually (n = 2) | 8.16% |
| Quarterly (n = 4) | 8.24% |
| Monthly (n = 12) | 8.30% |
| Daily (n = 365) | 8.33% |
So ₹1,00,000 at 8% compounded monthly grows to about ₹1,48,985 in five years, ₹48,985 of it interest. At the same 8% compounded once a year it would reach ₹1,46,933.
APY Calculator Features
Any Compounding Frequency
Annual, semi-annual, quarterly, monthly or daily compounding, so you can match the terms your bank quotes.
Year-wise Growth Table
See the starting balance, interest earned and ending balance for every year of the period.
Visual Breakdown
A chart splits the final balance into the money you put in and the interest it earned.
Compare Rates Fairly
Turn two quoted rates with different compounding into APYs and compare like with like.
Many Currencies
Work in rupees, dollars, euros, pounds and other currencies.
Free and Private
No signup, no tracking. Runs entirely in your browser.