Free ROI Calculator
Measure the payoff of any project, ad campaign, or investment by seeing total ROI and annualized ROI in seconds.
No sign-up required. 100% free to use.
Try the ROI Calculator
Enter your initial investment, ending value, and time held to see both ROI and annualized ROI you can compare across projects.
ROI Calculator
Inputs
Results
Final Amount
$15,000.00
Net Profit
$5,000.00
Total ROI
50%
Annualized ROI
22.47%
Want to hit a specific ROI?
How this works
Basic ROI
ROI measures how much you earned relative to the capital that was working on average.
- Net profit = final value − initial investment − mid-period contribution
- Average invested capital = initial investment + (mid-period contribution ÷ 2)
- ROI = net profit ÷ average invested capital
Annualized ROI
We convert your time input into years so a 6-month project and a 3-year project line up fairly.
- Annualized ROI = (1 + ROI)1 ÷ years − 1
Mid-period cash-flow
Use a positive number for extra capital added halfway through the period. Withdrawals aren’t supported because they can produce misleading percentages.
Target ROI
“Want to hit a specific ROI?” runs the same ROI formula in reverse—keeping your initial investment and midpoint contribution—to solve for the final value you’d need.
Learn more: ROI vs Annualized ROI—How to Read Them & Boost Your Investment Strategy
How to use the ROI tool
- Initial investment: Everything you spent (cash, fees, or ad spend).
- Ending value: Sale proceeds or current value of the asset/project.
- Time held: Use years or months so the calculator can annualize your return fairly.
- Mid-period cash flow (optional): Add any extra contributions or withdrawals to get a truer ROI.
Annualized ROI helps you stack-rank projects with different lengths—so a 6-month pilot and a 2-year investment can be compared apples to apples.
Popular ways people use it
- Marketing teams comparing campaigns by ROI and speed of payback.
- Founders checking if a prototype build beat their hurdle rate.
- Investors benchmarking flips, rentals, or side bets vs. the S&P.
- DIYers validating if a home upgrade or tool paid for itself.
ROI Calculator FAQ
Is ROI the same as profit margin?
No. ROI compares your gain to what you invested, while margin compares profit to revenue. Use ROI to judge if the investment outperformed your hurdle rate.
Why show annualized ROI?
Annualizing normalizes projects of different lengths so you can quickly tell which use of capital worked hardest each year.
Do I need an account to use it?
No. The ROI calculator is free and runs instantly in your browser.
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