Free Compound Interest Calculator

Estimate how your savings grow over time.

How Compound Interest Works

Compound interest means you earn interest on both your initial principal and the interest that has already been added. Over time, this creates exponential growth. The formula is:

A = P × (1 + r/n)^(n×t)

Frequently Asked Questions

What is the difference between simple and compound interest?

Simple interest is calculated only on the principal. Compound interest is calculated on the principal plus accumulated interest, leading to faster growth.