Compound Interest Calculator
See how your savings grow when interest earns interest.
Growth
Final amount
$22,196.40
For estimation purposes only — not financial, medical, or professional advice.
How to use this calculator
- 1Enter your starting principal and the annual interest rate.
- 2Set the number of years you plan to stay invested.
- 3Pick a compounding frequency to see the final amount update live.
How it's calculated
The classic compound interest formula is A = P(1 + r/n)^(nt).
P is the principal, r is the annual rate as a decimal, n is how many times interest is compounded per year (1 yearly, 4 quarterly, 12 monthly, 365 daily) and t is the number of years.
Interest earned is simply A minus P. The more frequently interest compounds, the higher the final amount for the same headline rate.
Compound Interest Calculator FAQs
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