ROI calculator

Enter how much you invested and the final value (or revenue): calculate the return on investment as a percentage and the profit.

Invested (€)

Final value / revenue (€)

What is ROI

ROI (Return On Investment) measures how much an investment earns relative to what you spent: ROI = (final value − invested) ÷ invested × 100.

You invest €1,000 and get back €1,250: the ROI is +25%. A negative ROI means you lost relative to what you invested.