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ROI Calculator (Return on Investment)

Return on investment, net gain and the annualised return (CAGR).

Input
No upload needed — instant
Privacy
Nothing is uploaded
Cost
Free · no sign-up · no watermark

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Processed entirely on your device

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Overview

About the ROI Calculator (Return on Investment)

Calculate the return on investment from what you put in and what you got back, showing the net gain, the ROI percentage and the annualised return (CAGR).

Return on investment reduces any deal to one comparable percentage. Enter what you put in and what you got back and this calculator returns the net gain, the ROI and — if you add the holding period — the annualised return (CAGR).

The maths

ROI = ((returned − invested) ÷ invested) × 100
CAGR = ((returned ÷ invested)^(1/years) − 1) × 100

ROI ignores time; CAGR converts the result into a steady yearly growth rate.

Where to use it

It works for anything with a cost and an outcome: a stock position, a rental property, a marketing campaign or a business purchase. Comparing CAGR rather than raw ROI keeps things fair when the time periods differ.

Private and precise

Every figure is worked out in your browser with standard financial formulas. Nothing you type is uploaded, stored or sent anywhere.

Step by step

How to use the ROI Calculator (Return on Investment)

  1. Enter what you invested and choose a currency.

  2. Enter what you got back, including any withdrawals or sale proceeds.

  3. Add the holding period in years to also see the annualised return.

  4. Read the net gain, the ROI percentage and the CAGR.

Why use it

Benefits and common use cases

What this tool is good for, and what it deliberately does not try to do.

Total and annualised return

Get the overall ROI and the smoothed yearly CAGR from just two figures and a time period.

Gain, loss and multiple

See the net gain or loss and how many times your money came back, at a glance.

Works for anything

Stocks, property, a marketing campaign or a business purchase — any cost with an outcome.

Questions

Frequently asked questions

Short, honest answers about quality, limits and privacy.

What is a good ROI?

It depends on the risk and the period. As a rough guide, long-run stock markets average around 7% a year after inflation, so a positive ROI above that is strong — but a single year tells you little.

What is the difference between ROI and CAGR?

ROI is the total return over the whole period, ignoring time. CAGR spreads that return into an equivalent steady yearly rate, which makes investments held for different lengths comparable.