Compound Interest Calculator

See how your investment grows over time with the power of compound interest.

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Final amount
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Total interest earned
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Formula

A = P × (1 + r/n)^(n×t)

A = P × (1 + r/n)^(n×t) where r = annual rate, n = compounding periods/year, t = years.

How to use?

  1. 1
    Enter initial amountType the amount you are investing or saving.
  2. 2
    Set rate, years and frequencyEnter annual rate, duration and how often interest is compounded.
  3. 3
    Read the resultFinal balance and total interest earned are shown instantly.

FAQ

What is compound interest?
Compound interest means you earn interest on both the initial principal and the interest already accumulated. Over time this creates exponential growth, also called the snowball effect.
How does compounding frequency affect the result?
The more frequently interest is compounded, the higher the final amount. Monthly compounding yields more than annual compounding at the same nominal rate.
Can I use this for savings accounts?
Yes. Enter your current balance as the initial amount, the account's annual interest rate, the number of years, and the compounding frequency offered by the bank.

Compound Interest Calculator

Compound interest is often called the eighth wonder of the world. Unlike simple interest, which is calculated only on the principal, compound interest is calculated on the principal plus all previously accumulated interest. This creates exponential growth over time.

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