ROI Calculator
Total and annualized return on any investment.
See how it works
Watch a quick simulation of this tool in action — no file needed.
How to use ROI Calculator
Follow these steps — everything happens instantly in your browser.
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Step 1. Enter the initial investment.
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Step 2. Enter the final value of the investment.
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Step 3. Set the holding period in years.
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Step 4. See total ROI, gain, and annualized return.
Why use this tool
Private by design
All processing happens locally in your browser. Open DevTools → Network and you'll see zero file uploads. Ever.
Instant
No upload wait, no queue, no server round-trip. Results appear the moment you drop a file.
Free & unlimited
No accounts, no watermarks, no daily caps. Use it as many times as you like, forever.
Works everywhere
Desktop, tablet or phone — every tool is responsive and installable as a PWA for offline use.
Frequently asked questions
Everything you might want to know about roi calculator.
NPV Calculator
Net Present Value of an investment with cash flows and discount rate.
IRR Calculator
Internal Rate of Return — the discount rate that makes NPV = 0.
Payback Period Calculator
How long until an investment pays for itself.
Compound Interest Calculator
See your money grow with compounding — daily, monthly, yearly.