Free · Instant · Accurate

Make Smarter Financial Decisions

From loan repayments to compound growth — our Finance Calculator gives you clarity in seconds, completely free.

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6Calculator Modes
100%Free to Use
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The Tool

Finance Calculator

Select a calculation type, enter your numbers, and get instant, accurate results.

£
%
yr

Results

Monthly Payment

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Total Repayment

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Total Interest Paid

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Results are indicative. Actual payments may vary by lender.

£
%
yr

Results

Final Balance

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Total Interest Earned

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Effective Annual Rate

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Assumes no additional deposits. Learn about compound interest →

£
£
%
yr

Results

Future Value

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Total Invested

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Total Growth

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Compounded monthly.

£
%
yr

Results

Present Value (today's worth)

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Discount Amount

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Useful for evaluating lump-sum investments or annuities.

£
£
yr

Results

Total ROI

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Annualised Return (CAGR)

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Net Profit / Loss

—

CAGR = Compound Annual Growth Rate.

£
£
%
yr

Results

Required Monthly Deposit

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Total You'll Deposit

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Interest Earned

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Compounded monthly, including existing savings.

Why Us

Built for Real Financial Decisions

No sign-ups, no ads, no data collection. Just fast, reliable calculations.

⚡

Instant Results

Real-time calculations update as you type. No waiting, no page reloads.

🔒

100% Private

All calculations happen in your browser. We never store or transmit your financial data.

📱

Works Everywhere

Fully responsive design works seamlessly on desktop, tablet, and mobile.

🎯

6 Calculator Types

Loans, compound interest, future value, present value, ROI, and savings goals covered.

Simple Process

Three Steps to Clarity

1

Choose a Mode

Pick from loan, compound interest, ROI, or savings calculator.

2

Enter Your Numbers

Fill in your principal, rate, and duration. All fields are clearly labelled.

3

Get Your Answer

Hit calculate and see your results instantly — no registration required.

Learn

Financial Guides & Insights

Master the concepts behind the numbers with our plain-English guides.

Investing

The Complete Guide to Compound Interest — and Why It's the 8th Wonder

Einstein allegedly called it the eighth wonder of the world. Whether the quote is apocryphal or not, the mathematics is very real. Here's everything you need to know.

Read Article →

FAQ

Frequently Asked Questions

Is Finance Calculator free to use? +
Yes, completely free — no sign-up, no subscription, no hidden fees. All calculators are available instantly.
How accurate are the results? +
We use industry-standard financial formulas (amortisation, compound interest, NPV). Results are highly accurate for illustrative planning. For major financial decisions, always verify with your lender or a financial advisor.
Is my financial data stored anywhere? +
No. All calculations run entirely in your browser using JavaScript. No data is ever sent to a server or stored anywhere.
What currency does the calculator use? +
The calculator displays results in £ (GBP) by default, but the formulas work for any currency — simply input your amounts and interpret the results in your local currency.
What is the difference between APR and compound interest? +
APR (Annual Percentage Rate) represents the yearly cost of a loan including fees, while compound interest refers to the method of calculating interest on both principal and accumulated interest over time.

Ready to plan your financial future?

Use our free Finance Calculator today — no registration, no limits.

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