ROI Calculator: The Complete Guide
Measure how well an investment performed. Enter the amount you put in and what it's now worth to get your return on investment and net profit — add a holding period to see the annualized ROI too.
Who the ROI Calculator is for
Investors, marketers, and business owners evaluating whether a project, campaign, or asset earned a worthwhile return.
How to use the ROI Calculator
- Type your values into the fields above — pick your currency or units where the calculator offers them.
- Results update automatically as you type; there's no submit button and nothing is sent to a server.
- Adjust any input to compare scenarios, then copy the result with a single click.
How it works
ROI = (final value − initial investment) ÷ initial investment × 100. Annualized ROI = ((final ÷ initial)^(1 ÷ years) − 1) × 100, which spreads the return evenly across the holding period.
Features
- Total ROI %
- Net profit
- Annualized ROI
- Any currency
What ROI tells you
Return on investment expresses gain or loss as a percentage of what you invested, making very different investments comparable. Total ROI ignores time, so a 40% return over one year and over ten years look the same — that's why annualized ROI, which accounts for the holding period, is often the fairer measure.