Compound Interest Calculator
See how your money grows with compounding over time.
$
$100$1,000,000
% p.a.
0.1%30%
years
1 yr30 yrs
Results
Principal
$10,000.00
Interest
$2,833.59
Total
$12,833.59
A = P(1 + r/n)^(nt) = $10,000.00 × (1 + 5%/12)^(12×5) = $12,833.59
What is Compound Interest?
Compound interest is calculated on principal plus accumulated interest — you earn interest on interest.
The formula: A = P(1 + r/n)^(nt) where P = principal, r = rate, n = compounding frequency, t = time.
The more frequently interest compounds, the more you earn. This is why it's called the "eighth wonder of the world."