ROI Calculator
Enter what you spent and what you got back to see the return on investment as a percentage, the net gain or loss and the return multiple. Add how long the money was invested — in days, months or years — and the calculator also gives the annualised return (CAGR), so you can fairly compare campaigns or investments that ran for different lengths of time.
How to use the ROI Calculator
- Enter the amount invested (the total cost).
- Enter the amount returned (the total value or revenue received).
- Optionally enter the period and choose days, months or years.
- Press Calculate to see ROI, net gain and annualised ROI.
Features
- ROI % = (return − investment) ÷ investment
- Annualised ROI using compound annual growth rate
- Net gain or loss and return multiple
- Period in days, months or years
Benefits
- Compare a 3-month campaign with a 2-year investment on equal terms
- Report marketing results in the figure finance teams expect
- Quick sanity check before committing more budget
Frequently asked questions
What is the difference between ROI and annualised ROI?
ROI is the total return over the whole period. Annualised ROI (CAGR) converts it to an equivalent yearly rate: (return ÷ investment)^(1 ÷ years) − 1.
Should "amount returned" include my original investment?
Yes. Enter the total value you got back. If you invested 1,000 and ended with 1,500, enter 1,500 — the gain of 500 is worked out for you.
Why is the annualised figure so high for short periods?
Annualising compounds the result as if it repeated all year. A 10% gain in one month annualises to about 214%, which is rarely repeatable, so use it for comparison rather than as a forecast.
Is this financial advice?
No. The results are estimates based on the figures you enter and do not account for risk, taxes, fees or inflation.
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