ROI Calculator Online Free
See your return on investment as a clear percentage, instantly.
How to use this tool
- 1Enter the initial investment amount.
- 2Enter the final or current value.
- 3Read the ROI as a percentage instantly.
- 4Optionally add a holding period to see the annualised return.
About this tool
ROI is the simplest way to compare whether an investment, campaign or purchase actually paid off, but comparing several scenarios by hand gets tedious fast and the arithmetic is easy to fumble under time pressure. This tool takes the initial investment and the final value and returns ROI as a clean percentage along with the absolute gain or loss. Add a holding period and it also shows the annualised figure, which is the honest way to compare a two-year return against a five-year one — a 60% total return looks impressive until you see it spread across five years. Use it for marketing spend, equipment purchases, or a straightforward before-and-after on an investment.
Frequently Asked Questions
Does this account for the time period?
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Simple ROI ignores time, but entering a holding period also shows the annualised return for a fair comparison.
Can ROI be negative?
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Yes. If the final value is lower than the initial investment, the calculator shows a negative percentage.
What should I include in the initial investment?
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Every cost required to make the investment, including fees, so the return reflects what you actually spent.