Jack Tools

ROI Calculator

Calculate return on investment, profit, and ROI percentage from your investment.

Enter investment details

£
£
ROI
0%
Profit
£0
Investment
£0
Final value
£0
Return multiple
0x

How This ROI Calculator Works

This ROI calculator helps you measure the return on an investment by comparing how much you put in with the final value you got back. It gives you the profit, the ROI percentage, and the return multiple in one simple view.

ROI stands for return on investment. The basic formula is profit divided by the original investment, multiplied by 100. Profit is simply the final value minus the amount originally invested.

This makes ROI useful for comparing investments, business projects, marketing campaigns, property deals, or anything else where you want to understand how efficiently money has generated a return.

It is especially helpful when you want to compare results across different opportunities using a single simple percentage figure.

Investment amount The amount of money originally invested or spent at the start.
Final value The total value received back from the investment, including the original amount and any gain or loss.
Profit This is the difference between the final value and the original investment amount.
ROI percentage This shows the return as a percentage of the original investment, making different investments easier to compare.
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Example ROI Calculations

Basic positive ROI
Investment£1,000
Final value£1,200
Profit£200
ROI = 20%
Higher return
Investment£5,000
Final value£6,500
Profit£1,500
ROI = 30%
Break even
Investment£2,000
Final value£2,000
Profit£0
ROI = 0%
Negative ROI
Investment£3,000
Final value£2,400
Profit-£600
ROI = -20%

ROI Calculator FAQs

ROI stands for return on investment. It measures how much profit or loss you made compared with the amount originally invested.
ROI is calculated by subtracting the investment amount from the final value to get profit, then dividing that profit by the original investment and multiplying by 100.
A good ROI depends on the type of investment, the risk involved, and the time period. A higher ROI is generally better, but it should always be judged in context.
Yes. If the final value is lower than the original investment, the profit becomes a loss and the ROI will be negative.
Basic ROI does not include time. It only compares the amount invested with the final value returned. For time-based comparisons, annualised return measures are more useful.
A return multiple shows how many times your original investment was returned. For example, a £1,000 investment growing to £2,000 is a 2.0x return multiple.

Related tools

Profit Margin Calculator Compare return on investment with profit margin. Savings Calculator Project future value alongside investment return. Compound Interest Calculator Compare ROI with compounding over time.