ROI Calculator: Formula & Worked Example
Return on investment as a percentage of investment cost. Calculate instantly in your browser with editable inputs, a worked example and clear assumptions. No account required.
How it is calculated
(Final value − Investment cost) ÷ Investment cost × 100
The denominator must be nonzero. Include costs in your inputs consistently; interim cash flows are not modeled.
Worked example
- Final value
- 150000
- Investment cost
- 100000
Example result: 50.00%
The interactive tool lets you edit every input and reset to this example. Calculations run in your browser.
Questions and answers
Are my calculator inputs sent to a server?
These calculations run in your browser. The calculator does not send your entered values to a calculation server or save them to your learning account.
Why can the result differ from a full spreadsheet model?
Each calculator uses the equation and assumptions shown on this page. Displayed values may be rounded. A workbook with different timing, fees, filters or source data can produce a different result.
Can I use the calculator without an account?
Yes. All 73 calculators are available to guest learners. The worked example shows the default inputs, and Reset restores them.
Related calculators
- CAGR — Compound annual growth rate between two values.
- Simple Interest — Calculate simple interest.
- Simple Interest Total — Calculate principal plus simple interest.
All 73 calculators · Practise in the Excel Simulator
Interactive practice runs in your browser.