How to use Compound Interest Calculator
Compound interest means interest is added to the amount that earns interest in later periods. The compounding frequency controls how often that addition occurs. At the same nominal rate, more frequent compounding generally increases the final amount.
This calculator has one initial amount and no later contributions. The annual rate is nominal and divided by the frequency. Choose simple interest when interest is paid without being reinvested, or SIP for repeating monthly contributions.
The formula
A worked example
Principal (₹): 10000 · Annual rate (%): 10 · Duration (years): 2 · Compounding frequency: Quarterly
Compound interest earned: ₹2,184.03
Questions about this calculation
Why does monthly compounding differ from annual compounding?
The annual nominal rate is divided into more periods, allowing earlier interest to earn interest.
Are recurring contributions included?
No. Use the SIP or RD savings estimator for monthly contributions.
Formula checks: 2026-10-08. Assumptions & corrections.