ROI Calculator

Return on investment as a percentage, plus annualised return.

ROI Calculator

Fast online calculation engine

Amount / Value 1

Rate / Percentage / Value 2

Tenure / Value 3

Output Result100010

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What does ROI Calculator do?

Enter what you put in and what you got out to see the return on investment as a percentage and in absolute terms. Add a holding period and it also calculates the annualised return, which is the only fair way to compare investments of different lengths.

How to Use ROI Calculator

1
Enter the amount investedInclude fees and costs for an honest figure.
2
Enter the final valueWhat the investment is worth or sold for.
3
Add the holding periodOptional; needed for the annualised return.

Key Features

Total ROI percentage and absolute gain or loss
Annualised return (CAGR) when you supply a holding period
Optional additional costs so fees and commissions are included
Clearly reports a negative return rather than hiding a loss

Frequently Asked Questions

What is the ROI formula?

ROI = (final value − initial investment) ÷ initial investment × 100. Turning £5,000 into £6,500 is a 30% return.

Why does annualised return matter?

A 30% return over one year is excellent; the same 30% over ten years is about 2.7% a year, which barely beats inflation. Annualising puts investments of different durations on the same footing.

How is annualised return calculated?

CAGR = ((final ÷ initial)^(1 ÷ years) − 1) × 100. It is undefined if either value is zero or negative, and the calculator says so rather than showing a misleading number.

Should I include fees in the investment amount?

Yes. Brokerage, stamp duty, management fees and taxes are real costs. Excluding them flatters the return, sometimes dramatically on small or short-held positions.

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