Compound Interest Calculator

Use this tool to calculate how much your money will grow over time using the power of compounding.

Understanding the Formula

Compound interest is calculated using the following mathematical formula:

A = P(1 + r/n)^(nt)

Why Compounding Frequency Matters

The more frequently interest is added back to your principal, the faster your wealth grows. For example, monthly compounding will yield a slightly higher return than annual compounding at the same interest rate because your interest starts earning its own interest much sooner.