Compound interest calculator
Enter a starting amount, regular contributions, a rate and a number of years to see your future balance, what you put in and the interest you earned. Nothing is uploaded.
Starting amount
Regular contribution
Annual interest rate (%)
Number of years
Compounding frequency
—Final balance
—Total contributions
—Interest earned
Year-by-year breakdown
Everything runs in your browser. No upload, no sign-up.
How it works
STEP 1
Enter your money
A starting amount and how much you add each month or year.
STEP 2
Set the rate & term
Annual interest rate, the number of years and how often interest compounds.
STEP 3
See it grow
Final balance, total invested and interest earned — plus a year-by-year table. All private.