Free ROI Calculator
Was it worth it? Enter what you put in and what came back - net profit, ROI percentage, and annualized ROI update live, in any currency. Free, no sign-up.
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Why the time period changes everything
Raw ROI ignores how long your money was tied up - and that hides the real winner. A trader who turns 500,000 into 650,000 in 6 months (30% ROI) is doing far better than one who does it in 2 years: the first can repeat the cycle and compound to roughly 69% a year, while the second earns about 14% a year.
That's why the calculator asks for the period. Whenever you compare two opportunities, compare their annualized figures - and if the money was borrowed, subtract the interest rate before celebrating.
ROI Calculator FAQ
How is ROI calculated?
ROI = (amount returned - amount invested) ÷ amount invested × 100. Put in 500,000 and get back 650,000, and your ROI is 150,000 ÷ 500,000 = 30%. Enter both amounts above and the calculator does it live.
What counts as the amount invested?
Everything the venture consumed, not just the headline purchase: stock cost plus shipping and duty, ad spend plus agency fees, equipment plus installation. Understating the investment is the most common way businesses flatter their ROI.
What is annualized ROI and why does it matter?
It converts returns over different periods onto a common yearly scale so they can be compared fairly. A 30% return in 6 months is far better than 40% over 2 years - annualized, the first is about 69% a year and the second about 18%. Add the time period above to see it.
What's the difference between ROI and profit margin?
Margin measures profit against revenue on each sale; ROI measures profit against the capital you tied up. A product can carry a modest margin but a high ROI if stock turns over quickly - which is why fast-moving goods with thin margins can beat slow luxury items.
What is a good ROI?
Compare it to your alternatives. If a savings account or treasury bill pays a certain rate risk-free, a business investment should meaningfully beat it to justify the risk and effort. And on borrowed money, the ROI has to clear the loan's interest rate before it earns anything at all.
How is this different from a Growpins Ledger account?
This calculator evaluates one investment at a time from numbers you supply. A free Growpins Ledger account records the actual money in and out - sales, expenses, and product-level profit in its best-sellers report - so the returns you measure are real, not estimated.
Measuring returns from memory?
A free Growpins Ledger account records the actual money in and out - sales, expenses, and profit per product - so your ROI numbers come from records, not recollection. Built by the team behind Growpins, founded by Dokun Bamigboye.
Measure real returns - sign up freeEvaluating a product's economics? Pair this with the Profit Margin Calculator and Break-Even Calculator, or browse all free tools.