What is the ROI Calculator?
Calculate return on investment (ROI) and the annualised return.
Enter amount invested, amount returned and investment period and the ROI Calculator returns ROI, net profit and annualised ROI. Results update as you type, and nothing you enter leaves your device.
How it is calculated
ROI = (Return − Cost) ÷ Cost × 100
Annualised ROI = ((Return ÷ Cost)^(1 ÷ years) − 1) × 100
How to use it
- Enter amount invested.
- Enter amount returned.
- Enter investment period in years.
- Read ROI in the results panel. It updates as you type.
- Change any value to compare scenarios, or use Share to send the result as a link.
Worked example
Common questions
What formula does the ROI Calculator use?
It uses: ROI = (Return − Cost) ÷ Cost × 100; Annualised ROI = ((Return ÷ Cost)^(1 ÷ years) − 1) × 100.
What do I need to use the ROI Calculator?
You need amount invested, amount returned and investment period. Sensible starting values are filled in so you can see how it works straight away.
Is the ROI Calculator free, and is my data stored?
It is free with no sign-up. The calculation runs in your browser, so the values you enter are not sent to or stored on our server.