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Did that course, ad spend, new laptop, or piece of software actually pay for itself? Enter what you put in and what you got back and this works out your return on investment — the net gain, the return multiple, the annualized ROI (the number that tells the truth about a slow payoff), and, for anything that earns month after month, how long it takes to pay back.
Nothing you type leaves your browser. This isn't financial advice — for how an expense fits your whole picture, see the cost-of-doing-business calculator.
Return on investment answers one question: for every dollar you put in, how much did you get back? It rests on a single line — (amount returned − amount invested) ÷ amount invested — which is just your net gain expressed as a percentage of what you risked.
An example. You pay $1,000 for a course and it directly lands a project worth $3,000. Your net gain is $2,000, so your ROI is $2,000 ÷ $1,000 = 200% — and the return multiple is 3×, i.e. every dollar in came back as three. A 200% ROI always means a 3× multiple; the two are the same fact stated two ways. ROI can also be negative: if that $1,000 only brought back $600, your ROI is −40% and you got back 60¢ on the dollar.
A raw ROI ignores time, and time is exactly what makes a return good or bad. A 50% ROI sounds great — until you learn it took five years to earn. Annualized ROI fixes this by spreading the return evenly across the years it took, the same way a savings account quotes an annual rate:
That 50% return over three years is only about 14.5% a year once you annualize it. Over one year a 50% ROI really is 50% a year; over five years it's barely 8.4%. This is why "I doubled my money" means nothing without a timeframe — and why the time-held field above is worth filling in. It's the same trap the markup-vs-margin tool warns about: one headline number, very different realities underneath, depending on the base you measure against.
Some investments don't pay back in one lump — they drip a return every month. A $400/month bump from a new $2,000 website, say. For those, the number that matters is the payback period: how many months until the thing has paid for itself.
$2,000 ÷ $400 = 5 months to break even; after that, the return is gravy. Switch to Ongoing return mode above and the calculator shows the payback period, the annual return, and the ROI over whatever horizon you choose. A short payback on something durable is one of the clearest "yes" signals in a freelance business — and a payback longer than the thing will last is a clear "no".
ROI is only as good as the numbers you feed it. Count the full cost (the $1,200 course plus the 20 hours you spent on it at your hourly rate) and only the return you can genuinely attribute to it. Beware claiming a whole new client as the "return" on a $50 tool. And remember ROI says nothing about risk or certainty — a likely 30% beats a maybe-300%. Used with a clear head, it turns "this felt worth it" into a number you can actually defend.
Subtract what you invested from what you got back to find your net gain, then divide that net gain by the amount invested. If you spent $1,000 and received $3,000, your net gain is $2,000 and your ROI is $2,000 ÷ $1,000 = 200%. The One-time return mode above does this instantly and also shows the return multiple (here, 3×).
Plain ROI is the total return over the whole period, ignoring how long it took. Annualized ROI spreads that return evenly across the years so you can compare investments of different lengths on equal footing. A 50% total ROI is excellent in one year but only about 14.5% per year if it took three years. Enter the time held above to see both.
Divide the up-front cost by the amount it returns each period. A $2,000 investment that brings in $400 a month pays back in $2,000 ÷ $400 = 5 months; everything after that is profit. Use the Ongoing return mode for tools, gear, or anything with a steady monthly payoff.
There's no universal number — it depends on the risk and how long your money is tied up. A reliable positive return that beats what you'd earn elsewhere (and beats the value of your time) is good; a high ROI that took years or was a long shot may not be. Always compare the annualized figure, and weigh certainty alongside size.
No. Every calculation runs entirely in your browser — nothing you type is sent to a server or stored. The link in your address bar updates so you can bookmark or share a scenario, but it only contains the numbers and mode you chose.
Keep going
Total your real overhead and the salary you want — and the revenue you must bill.
Turn a cost into a price by markup or target margin — and see why they differ.
Work backward from the take-home you want to the rate you need to charge.