Compound Interest Calculator

See how your savings or investment grows with compounding over time.

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The compound interest formula

A = P (1 + r/n)ⁿ∙ₜ

Where P is your principal, r is the annual interest rate, n is how many times per year interest compounds, and t is time in years.

Useful for students learning finance, and for anyone comparing savings accounts, fixed deposits, or investment products across countries.