Compound Interest Calculator
Free compound interest calculator. Project growth with principal, rate, compounding frequency and optional contributions.
Final balance
$17,175.24
after 10 years
Total contributed
$13,000.00
Interest earned
$4,175.24
With simple interest at the same rate you would have $13,500.00. Compound interest earns $3,675.24 more.
Show yearly breakdown
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About Compound Interest Calculator
See how money grows with compound interest. Add an optional periodic contribution to model savings habits, and review a year-by-year table of balance and interest earned.
How to use it
- 1Enter the principal amount.
- 2Set the annual rate and compounding frequency.
- 3Add a contribution amount if you save regularly.
- 4Read the final balance and the yearly table.
Examples
Basic
Input
$10,000 at 5% monthly for 10 yearsResult
about $16,387With savings
Input
$5,000 + $200/month at 6% for 20 yearsResult
substantially higher final balanceFrequently asked questions
What compounding is supported?
Yearly, monthly, weekly and daily.
Are contributions compounded too?
Yes - each contribution earns interest from when it is added.
Is this financial advice?
No - it is a mathematical projection for planning.