ROI Calculator
Calculate return on investment, net gain, and annualized ROI from your initial and final values. Free investment return calculator. Fast and privacy-conscious. Data handling depends on the tool and is documented on each page.
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This tool is open-source and community-driven. If you find a bug, have a feature request, or want to contribute a new tool, please create a PR on GitHub or contact us.
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ROI Calculator — Measure What Your Investment Really Returned
Return on investment (ROI) tells you how much you gained relative to what you put in. This calculator gives the total ROI, the net gain, and the annualized ROI so you can compare investments held for different lengths of time on equal footing.
The Formulas
Total ROI = (Final Value − Initial Investment) ÷ Initial Investment × 100. Because a 50% return over one year is far better than 50% over ten, the annualized ROI uses (Final ÷ Initial)^(1/years) − 1 to express the yearly compound rate.
Why Annualized ROI Matters
Two investments can show the same total ROI but very different annual performance. Annualizing puts them on a per-year basis, which is the fair way to compare a quick flip against a long-term hold.
Key Features & Benefits
Every feature is designed to deliver professional results with maximum speed and minimum friction. No compromises on quality, privacy, or accessibility.
How to Use ROI Calculator — Step by Step
Follow these simple steps to get your result in under 30 seconds. No signup, no install, no learning curve — just paste, process, and download.
Enter Your Values
Type your numbers into the labelled fields in ROI Calculator. Each input is clearly described so you know exactly what to enter.
Adjust the Options
Pick the relevant settings — such as units, rates, or rounding — to match your specific situation.
Read Your Result
ROI Calculator updates the result automatically as you change inputs, so you can compare scenarios in seconds.
Copy or Share
Copy the result or share the page link. Nothing is stored, so your numbers stay private.
ROI Calculator — Frequently Asked Questions
Got questions about ROI Calculator? Here are clear, honest answers to the most common questions about pricing, privacy, compatibility, and features.
How do I calculate ROI?
Subtract the initial investment from the final value, divide by the initial investment, and multiply by 100. A $1,000 investment worth $1,500 has a 50% ROI.
What is annualized ROI?
Annualized ROI expresses the return as a yearly compound rate, using (final ÷ initial) raised to the power of 1 over the number of years, minus one. It lets you compare different holding periods fairly.
Can ROI be negative?
Yes. If the final value is below the initial investment, ROI is negative, indicating a loss on the investment.
Does ROI account for fees and taxes?
This calculator uses your entered initial and final values. For a true net ROI, include fees, commissions, and taxes in those figures.
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