ROI Calculator

Calculate return on investment and annualised ROI.

0Net profit
0Total ROI
0Annualised ROI
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About ROI Calculator

ROI Calculator is a free online tool that lets you calculate return on investment and annualised roi — straight from your browser, with no software to install, no sign-up, and no watermarks. It runs on Windows, Mac, Linux, Android, and iOS, so you can use it on whatever device you happen to have to hand.

Enter your figures and ROI Calculator applies the right formula instantly, showing a clear breakdown so you understand how the result is reached — not just the final number. Adjust any input to compare scenarios side by side. Files and data are processed securely and removed automatically afterwards, and many steps run entirely on your own device for extra privacy. Because ROI Calculator is completely free and unlimited, you can use it as often as you need for work, study, or personal projects.

Benefits of ROI Calculator

Instant answers Results recalculate the moment you change an input.
Compare scenarios Tweak the numbers to see best-, worst- and likely-case outcomes.
Clear breakdown See how the result is worked out, not just the final figure.

Frequently asked questions

How does ROI Calculator work out the result?

Enter your values and ROI Calculator applies the relevant formula instantly, showing a clear breakdown alongside the final figure.

Can I compare different scenarios?

Yes — change any input and the result recalculates immediately, so you can weigh up options side by side.