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Compound Interest Calculator

Use our free calculator below to work out the growth of your investment over time with compound interest.

Currency

Initial Investment

Interest Rate

Compound Frequency

Duration

Years
Months

What is Compound Interest?

Compound interest allows your savings to grow faster because it adds interest on both the principal and the accumulated interest. Our free calculator helps you estimate how much your money can grow over time.

Why Use a Compound Interest Calculator?

Our calculator lets you estimate how much your money will grow with regular compounding. It’s perfect for savings accounts, investments, retirement planning, and more.

Example Scenario

If you invest £5,000 at 5% annual interest compounded monthly, you'll have approximately £6,416 after 5 years.

Common Questions

Is compound interest better than simple interest? Yes — compound interest grows faster because it includes interest on previous interest.

Which compounding frequency gives the best return? Monthly compounding typically provides the highest returns.

Like this calculator? Try our other free tools

All our calculators are free, fast, and built to help you make smarter money decisions.

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