ROI Calculator
Measure the return on any investment — a marketing campaign, equipment, or shares. Enter the money you put in and what you got back to see your ROI percentage, net profit and how your money grew.
What this means
ROI compares how much profit an investment produced against what it cost. An ROI of 50% means you earned half your investment back on top of recovering the cost.
How we calculate it
Formula
ROI % = (Gain − Cost) ÷ Cost × 100. Gain is what you received back, cost is what you invested.Worked example
Invest $1,000 in ads, get $1,800 in sales:
- 1Gain = 1,800, Cost = 1,000
- 2Profit = 1,800 − 1,000 = 800
- 3ROI = 800 ÷ 1,000 × 100 = 80%
Important assumptions
- A positive ROI means profit; negative means the investment lost money.
Frequently asked questions
What is a good ROI?
It depends on the industry and risk. Marketing campaigns often target several hundred percent; equipment investments may be considered good at 10–20%.
Does ROI include time?
Basic ROI does not. For time-comparable returns, look at annualized ROI or IRR, which account for how long your money was tied up.
Guide
ROI Calculator Guide: Measure Any Investment the Right Way
ROI turns a messy investment story into one comparable percentage. Here is the formula and the traps to avoid.
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