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ROI Calculator
Enter amount invested, amount returned and holding period to get ROI, net gain and annualized return.
ROI
35.0%
Net gain
$3,500.00
Annualized
16.2%
🔒 This tool runs entirely in your browser. Your data is never uploaded.
Frequently asked questions
What does ROI measure?＋
Return on investment — your net gain expressed as a percentage of what you invested.
What is annualised ROI?＋
It expresses your return as a yearly rate, so you can fairly compare investments held for different lengths of time.
Is my data uploaded?＋
No — it's calculated locally in your browser.