Finance
ROI Calculator
Calculate return on investment from cost and final value.
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Transparent methodology
What the result includes—and what it does not
Built for businesses comparing the gain or loss from an investment with its cost.
Calculation method
- 1Gain or loss = final value − investment cost.
- 2ROI = gain or loss ÷ investment cost.
- 3The result is shown as both currency and percentage.
Assumptions and limits
- The calculator uses simple total ROI and does not annualize or discount future cash flows.
- Include all relevant costs and fees in the investment-cost input.
- ROI alone does not describe risk, timing, liquidity, or opportunity cost.
Worked example
$5,000 investment returning $6,500
Input: $5,000 cost and $6,500 final value.
Output: $1,500 gain and 30.00% total ROI.
How to use it
Three steps. One clear answer.
- 1Enter or paste the values requested by the tool.
- 2Review the input units and choose any relevant options.
- 3Calculate, then copy or download the result you need.
Built for trust
Useful without the friction.
- No registration or paywall before your result.
- Responsive controls for phone, tablet, and desktop.
- Clear assumptions and warnings where estimates have limits.
Frequently asked questions
How does the ROI Calculator work?
Gain or loss = final value − investment cost. ROI = gain or loss ÷ investment cost. The result is shown as both currency and percentage.
What should I check before using the result?
The calculator uses simple total ROI and does not annualize or discount future cash flows. Include all relevant costs and fees in the investment-cost input. ROI alone does not describe risk, timing, liquidity, or opportunity cost.
How current is this page?
The methodology and source notes were reviewed on 2026-07-24. Editable rates and inputs should still be checked against the provider or authority linked below.
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