Is the ROI Calculator free to use?

Yes, the ROI Calculator is completely free. There is no sign-up, no account required, and no limit on how often you can use it.

Does the ROI Calculator factor in taxes or fees?

The ROI Calculator performs the core calculation only. For final figures, you may need to add applicable taxes, fees, or charges relevant to your situation.

What devices does the ROI Calculator work on?

The ROI Calculator works on any device with a modern web browser — desktop, laptop, tablet, or phone. It is mobile-friendly and works offline once the page has loaded.

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ROI Calculator

Calculate Return on Investment. Enter cost and gain to get ROI percentage and net profit. Compare multiple investments.

The ROI Calculator is a free online tool that helps you calculate return on investment. enter cost and gain to get roi percentage and net profit. compare multiple investments It runs in your browser with no sign-up, downloads, or installation needed. All processing happens locally — your data stays on your device.

Initial investment

Total return

Time period

How to use

ROI explained

ROI = (Return − Investment) ÷ Investment × 100%. A 35% ROI on a £10,000 investment means you gained £3,500. The annualised ROI adjusts for the time period so you can compare investments of different durations.

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