ROI Calculator
Enter what you spent and what you got back to see ROI percentage, profit and return multiplier.
Used only for the projected annualised return.
Include VAT / tax
Off by default. Turn on to factor tax into the figures.
ROI
150.00%
£1,500.00 profit on £1,000.00 invested
Profit
£1,500.00
ROAS-style return
2.50×
ROI formula
Profit ÷ cost
ROAS formula
Return ÷ cost
Every £1 invested returned £2.50.
Strong return - more than doubled the investment.
How it works
ROI is (return − investment) ÷ investment × 100. It tells you how much profit you made relative to what you put in, expressed as a percentage.
Basic guide
Enter the amount invested and the return generated.
The calculator shows ROI percentage, profit and the return multiplier. You can optionally enter an investment period for the projected annualised return.
Example
With a £1,000 investment returning £2,500, the calculator shows:
Profit: £1,500 ROI: 150% Return multiplier: 2.5×
ROI measures profit against the original cost, while the return multiplier shows how much came back for each £1 invested.