Compound Interest Calculator

See how a one-time investment grows with the power of compounding.

Principal amount: ₹1,00,000

₹1k₹1 Cr

Interest rate (per year): 10%

1%30%

Time period: 10 years

1 yr40 yrs

Compounding frequency

The compound interest formula

A = P × (1 + r/n)^n×t

P = principal (starting amount)
r = annual interest rate (as a decimal)
n = number of times compounded per year
t = number of years

Compound interest earns "interest on interest", so the more often it compounds and the longer you stay invested, the faster your money grows.

FAQ

What's the difference from simple interest?: Simple interest is calculated only on the principal. Compound interest is calculated on the principal plus previously earned interest.
Does this add monthly deposits?: No — this is for a single lump sum. For regular monthly investments, use our SIP calculator.