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Compound Interest Calculator - Calculate Interest & Maturity Value

Use this compound interest calculator to calculate the maturity value of your investment based on the principal amount, interest rate, time period, and compounding frequency. Easily estimate total interest earned and see a year-wise growth breakdown.

₹1K₹1,00,000₹1Cr
1%8.0%30%
1 yr10 years30 yrs
Compound interest is calculated on the initial principal and also on the accumulated interest of previous periods. More frequent compounding (e.g. monthly vs yearly) results in slightly higher returns for the same nominal rate.

How does the Compound Interest Calculator work?

This compound interest calculator estimates the future value of your investment using the formula A = P(1 + r/n)^(nt), where P is the principal, r is the annual interest rate, n is the number of times interest is compounded per year, and t is the time period in years. It shows how your money grows faster with more frequent compounding compared to simple interest.

Compound Interest Formula

A = P × (1 + r/n)^(n × t), where A is the maturity amount, P is the principal, r is the annual interest rate (as a decimal), n is the compounding frequency per year, and t is the number of years. Total interest earned is A − P.