ROI calculator

Calculate net profit, ROI and an optional annualized return.

Runs on your device Works offline after setup All Business tools

Amount invested

Amount returned

Holding period in years (optional)

Enter your values, then choose Calculate. Results stay on this device.

Limits

One investment and one final return, no interim cash flows, fees or taxes. Annualized return is not an IRR.
Money inputs support 2 decimal places unless stated otherwise. Use one currency consistently. These estimates are not financial, tax or legal advice.
Physical phones and real Safari remain unverified.

What happens to your data

ROI calculator runs inside this browser tab, and the page's code comes from this site. There is no application server to receive your data, and the site's security policy limits connections to this site.

How local processing works

Good to know

One investment and one final return, no interim cash flows, fees or taxes. Annualized return is not an IRR.
Money inputs support 2 decimal places unless stated otherwise. Use one currency consistently. These estimates are not financial, tax or legal advice.
Physical phones and real Safari remain unverified.