ROI Calculator
Calculate roi with reusable inputs and a clear result. This free calculator runs locally, supports shareable URL values and does not send entered amounts to analytics.
🔒 100% private — files never leave your browser
Result
Your values stay in this URL when you share it; they are not sent to analytics.
Formula
ROI = (final value − original investment) ÷ original investment × 100
Worked example
$1,200 final value on a $1,000 investment = 20% ROI.
How to use the ROI Calculator
- 1 Enter the values for the calculation.
- 2 Review the formula and worked example below the form.
- 3 Copy the result or share the URL with its values when useful.
Frequently asked questions
What is the roi formula?
ROI = (final value − original investment) ÷ original investment × 100.
Are my entered amounts uploaded?
No. The calculation runs in your browser. URL sharing stores values only in the address you choose to share.
Is this financial, tax or medical advice?
No. This is a general arithmetic tool. Verify business decisions and local requirements with qualified sources.
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