See the real return on any investment or project. Enter the amount invested and the amount returned — and get your net profit, ROI %, and annualized return.
Simple ROI — it doesn't account for risk, taxes, or cash flows in between. Annualized return assumes steady compounding over the period; use it to compare, not to promise.
Return on investment is just profit divided by what you put in. It's the quickest way to compare very different opportunities on the same footing.
ROI = (Amount returned − Amount invested) ÷ Amount invested
Over multiple years, the annualized return is more honest than raw ROI — a 30% return in one year is far better than 30% over five. This calculator shows both.
ROI expresses profit as a percentage of what you put in: ROI = (net gain ÷ cost) × 100, where net gain is what you got back minus what you spent. Invest $1,000 and end up with $1,200 and the net gain is $200, so ROI = $200 ÷ $1,000 = 20%. Because it is a ratio, ROI lets you compare investments of very different sizes on the same scale.
A plain ROI figure ignores how long the money was tied up — and a 20% return in one year is far better than 20% over five. To compare fairly, annualize it: annualized ROI = (1 + ROI)(1 ÷ years) − 1. A 20% total return earned over two years is (1.20)0.5 − 1 ≈ 9.5% per year. When you enter a time period, this calculator reports the annualized figure so you can line up investments of different lengths.
"Cost" should include everything you spent to get the return — purchase price plus fees, commissions, shipping, or the cost of improvements. For a marketing campaign, cost is ad spend plus the time and tools that went into it. Leaving costs out inflates ROI and leads to bad comparisons.
ROI is ideal for a quick, apples-to-apples comparison of past or expected returns. For investments with cash flows spread over time (a rental property, a multi-year project), more precise measures like internal rate of return (IRR) or net present value (NPV) account for when each dollar arrives. Use ROI to screen and compare; use IRR/NPV when timing of cash flows matters.
Subtract what you invested from what you got back, then divide by what you invested, and multiply by 100 for a percentage. This calculator also shows the return multiple and, over multiple years, the annualized return.
It depends entirely on the risk and the alternative. Compare an opportunity's annualized return to what you'd earn elsewhere at similar risk — a number only looks "good" next to the option you're giving up.
Related: compound interest calculator · profit margin calculator · all free calculators.
More free pricing & profit tools — no signup, works on any device.
Yes. The ROI Calculator is completely free, runs in your browser, and never asks for a signup, email, or download. Enter your numbers and the result updates instantly.
It uses standard formulas and recalculates the moment you change a value, so the math is exact for the inputs you enter. Treat the result as a reliable planning estimate; for decisions with legal or tax consequences, confirm the figures with a qualified professional.
Yes. The calculator is mobile-friendly and works on any phone, tablet, or computer — there is no app to install and nothing to save.
Yes. Scroll to “Add this free calculator to your site” above and copy the embed snippet to place the live calculator on your blog or website for free.
Last reviewed: September 2026. Free to use, no signup — ROI Calculator by ToolWise Digital.
Copy the snippet to embed the live calculator on your blog or website — free for any site. The small “Calculator by ToolWise Digital” credit line keeps it free; you're welcome to remove it, but we appreciate you leaving it.
Ready-made Google Sheets & Excel trackers for money, taxes, and small business — each with a free phone version.
Browse the shop →Subscribe and we'll email you our Simple Monthly Budget (Google Sheets & Excel, plus a phone version) — free. Then the occasional short note on pricing, bookkeeping, and the money side of a small business. No spam — unsubscribe anytime.