% Loans and personal finance

Compound interest calculator

Explore compound interest and regular monthly contributions.

Rules reviewed: 2026-10-13BS / EN
01

Your inputs

Starting values are an example. Replace them with your own.

Your inputs stay in your browser.

02

Your result

Enter your details and run the calculation.

METHOD

How it is calculated

The nominal rate is converted to an equivalent monthly rate; contributions occur at month end.

TRACEABLE

Sources and validity

Basic arithmetic or geometry using the formula shown. Uses only your inputs.

How we maintain data ↗