ROI Calculator
Measure what your money actually earned.
Return on investment turns any gain into a single comparable percentage. Enter what you put in and what you got back to see your ROI and profit in one glance. Use it to compare stocks, a side business, or even a course — against each other and against doing nothing.
How it's calculated
ROI = (amount returned − amount invested) ÷ amount invested × 100. A negative result means the investment lost money.
Frequently asked questions
What is a good ROI?
It depends on risk and time. A 7–10% annual ROI is a solid long-term benchmark for stock-market investing; a 'good' ROI on a risky startup bet would need to be far higher to justify the risk.
Does ROI account for time?
No — and that's its biggest weakness. A 50% ROI over one year is excellent; over ten years it's weak. For multi-year investments, also look at annualized return (CAGR).
Can ROI be negative?
Yes. If you get back less than you put in, ROI is negative and the 'profit' shows as a loss. Selling a $8,000 investment for $6,000 is a −25% ROI.