Compound Interest Calculator
Enter a principal amount, an interest rate and a duration to see the final amount and interest earned with compound interest.
Final amount
Interest earned
Pourquoi utiliser cet outil ?
Compound interest grows much faster than simple interest over time, but the math is easy to get wrong by hand. This tool computes the exact future value of an investment for any compounding frequency, live.
Why it's free
A discreet ad banner covers hosting costs — that's the whole business model. No account to create, no usage limit, no paid tier unlocking the real result. Calculations run in your browser, so your numbers, dates and text never leave your device.
How our tools work