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ROI Calculator

Tax & Financial Free Updated 25 Sep 2026
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ⓘ About this tool 🔄 Last updated 25 Sep 2026 ✓ Reviewed by TopToolAI Team

Return on investment (ROI) measures the gain or loss on something you put money into, as a percentage of what you invested. Add how long you held it to also see the annualized (yearly) return.

How to use ROI Calculator

Step-by-step guide to the boxes below. Open it only if you need help.

  1. 1
    Amount invested Text

    The total amount you put in at the start.

    Example: 5000

  2. 2
    Final value Text

    What the investment is worth now, or the amount you sold it for.

    Example: 6500

  3. 3
    Time held, in years Text optional

    Add this to also see the annualized return.

  4. 4
    Press “Calculate”

    Click the button under the boxes. If something is missing or not valid, a short message tells you which box to fix.

  5. 5
    Read your result

    Your answer appears under the button, with a short note in plain words where it helps. Change any box and press again to compare different numbers.

Embed this calculator on your website

Want this calculator on your own site? Copy the code below and paste it into the HTML of any page or post. It works the same as it does here. If you do not mind, leave the small link under it in place.

ROI Calculator FAQs

What counts as a good ROI?
It depends a lot on the type of investment and the time held. A 30% return sounds strong over one year, but weak spread over ten.
Why does annualized ROI matter?
Total ROI does not account for how long your money was tied up. Annualized ROI lets you compare investments held for different lengths of time on an even footing.
How do I calculate ROI?
ROI % = (final value − amount invested) ÷ amount invested × 100. Turning 1,000 into 1,300 is a 30% ROI.
What is annualised ROI?
The yearly equivalent of your return over several years, which lets you compare investments held for different times.

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