Financial calculator

Compound Interest Calculator

Estimate how money grows with compounding and regular contributions. This does not predict investment returns.

Formula

Principal grows by A = P(1 + r/n)^(nt). Contributions are added monthly in this first version and compounded after each contribution period.

Returns are not guaranteed. Taxes, fees, inflation and market volatility are not included.

Calculator.net Compound Interest Calculator - competitor benchmark, accessed 2026-05-13.
CalculatorSoup Compound Interest Calculator - competitor benchmark, accessed 2026-05-13.

Last reviewed: 2026-05-13