Compound Interest Calculator
Calculate how a principal amount grows over time with compound interest, based on your chosen compounding frequency.
Inputs
Result
Fill in the fields to see your result.
Formula
Compound interest reinvests interest earned in each compounding period, so growth accelerates over time compared to simple interest.
A = P(1 + r/n)^(nt)Step-by-step
- 1
Enter the principal
Type in the initial amount of money invested.
- 2
Enter the annual interest rate
Type in the yearly interest rate as a percentage.
- 3
Enter the time period
Type in the number of years the money will grow.
- 4
Choose a compounding frequency
Select how often interest is added to the balance, from annually to daily.
Examples
$1,000 at 5% for 10 years, monthly compounding
- principal
- 1000
- rate
- 5
- time
- 10
- compounds Per Year
- 12
Future value $1,647.01, total interest earned $647.01
$10,000 at 4% for 5 years, annual compounding
- principal
- 10000
- rate
- 4
- time
- 5
- compounds Per Year
- 1
Future value $12,166.53, total interest earned $2,166.53