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📈 Compound Interest Calculator

See how your money grows with compound interest. Enter principal, rate, and time to get future value, total interest, and yearly growth chart.

  • Calculate future value of your investment
  • See year-by-year growth breakdown
  • Compare monthly, quarterly, and yearly compounding
  • Works offline — your data stays private
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📈 Compound Interest Calculator

How to Use

  1. 1 Enter principal amount (your initial investment).
  2. 2 Enter annual interest rate.
  3. 3 Select compounding frequency (yearly, quarterly, monthly).
  4. 4 Enter time period in years.
  5. 5 Click "Calculate" to see results.

Frequently Asked Questions

What is compound interest?

Compound interest is interest calculated on both the initial principal and the accumulated interest from previous periods. Your money earns interest on interest.

How is it different from simple interest?

Simple interest is calculated only on the principal. Compound interest includes interest on previously earned interest, making your money grow faster.

Which compounding frequency is best?

More frequent compounding (monthly or daily) gives slightly higher returns than annual compounding for the same rate.

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