Finance
Return on Investment Calculator
Measure ROI as a percentage and a multiple from gain and cost.
Formula
ROI equals gain minus cost, divided by cost, times 100.
How it works
ROI is a quick comparison tool, not a complete investment judgement — it ignores time, risk, and cash-flow timing. A 50% ROI over one year is very different from 50% over ten years.
FAQs
What is a good ROI?
It depends on risk and time — compare similar investments over the same period.
Can ROI be negative?
Yes, if the gain is less than the cost, the result is negative.
Does ROI include time?
No — for time-adjusted returns, look at annualised return.
Are these figures financial advice?
No — they are estimates for planning only, not financial advice. Check with a qualified adviser for decisions involving large sums.
Estimates only, not financial advice. Figures are approximate and do not include all fees, taxes, or changing rates unless stated.