Compound Interest Calculator

Calculate compound interest on savings or investments with the standard compounding formula.

Formula

A = P × (1 + r/n)^(n×t) — A: final amount, P: principal, r: annual rate, n: compounds/year, t: years

Examples

InputResult
$1,000 at 5% for 10 yrs, monthly$1,647.01
$5,000 at 8% for 5 yrs, yearly$7,346.64
$10,000 at 3% for 20 yrs, monthly$18,206.11

Frequently Asked Questions

What is compound interest?

Compound interest is interest earned on both the original principal and on previously accumulated interest, so the balance grows faster over time.

Does compounding frequency matter?

Yes. The more often interest compounds, the higher the final amount for the same nominal rate.

Is this calculator free?

Yes, completely free with no signup required.

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