Compound Interest Calculator

Use this compound interest calculator to estimate how savings or investments may grow when interest is added over time.

How to use this calculator

• Enter a starting amount, interest rate and time period.
• Compare monthly, yearly or regular contribution scenarios.
• Remember that real returns can change and may be affected by fees, tax and inflation.

Before you rely on the result

Calculator results are designed for quick estimates and everyday planning. Check important financial, tax, legal, health or business decisions with an appropriate official source or qualified professional.

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Compound Interest Calculator FAQs

What is the compound interest calculator for?

It helps you make a quick estimate and understand the numbers before comparing options or checking official figures.

Are the results exact?

The results are estimates based on the values you enter. Final figures can vary because of rules, fees, rates, rounding or personal circumstances.