Compound Interest Calculator
See how your money grows over time
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$
%
years
Compound Interest Formula
A = P(1 + r/n)^(nt)
Where:
A = Final amount
P = Principal (initial investment)
r = Annual interest rate (decimal)
n = Number of times compounded per year
t = Number of years
Where:
A = Final amount
P = Principal (initial investment)
r = Annual interest rate (decimal)
n = Number of times compounded per year
t = Number of years
The Power of Compound Interest
Compound interest is when you earn interest on your interest. The earlier you start investing, the more time your money has to grow exponentially.
Example: $10,000 invested at 7% annual interest becomes:
- $19,672 after 10 years
- $38,697 after 20 years
- $76,123 after 30 years