Money & Percentages

How do you calculate compound interest?

See the common compound interest formula.

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

Compound interest is calculated with A = P(1 + r/n)^(nt), where interest is added repeatedly over time.

P principal

r annual rate

n compounds per year

Need a Custom Calculation?

Use the Compound Interest Calculator for custom dates, ranges, and related calculations.