Calculate compound interest
See how a lump sum grows with compounding, at any frequency, over any period.
Calculated in your browser. Nothing you enter is sent to a server.
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Principal
Annual interest rate8.0%
Time period10 yr
Compounding frequency
Maturity value
₹2,20,804
Interest earned₹1,20,804
Calculated in your browser. Nothing is sent anywhere.
01
Enter the principal and rate
The starting amount and annual interest rate.
02
Pick a compounding frequency
Annually, semi-annually, quarterly, or monthly.
03
See the maturity value
The final amount, and how much of it is interest.
Frequently asked
How is compound interest calculated?
Using A = P(1 + r/n)^(nt), where P is the principal, r is the annual rate, n is the number of compounding periods per year, and t is the time in years.
Why does compounding frequency matter?
More frequent compounding (e.g. monthly vs. annually) means interest starts earning interest sooner, so the same nominal rate produces a slightly higher return the more often it compounds.