Free ROAS and ROI calculator: optimise your campaigns instantly
Whether you run Facebook Ads, Google Ads or TikTok Ads, knowing the real return on your advertising investment is vital. This free online calculator lets you judge the profitability of your ads instantly — no signups, no spreadsheets, no formulas to memorise. Everything happens in your browser as you type.
Most advertisers stop at ROAS, and that is exactly where money quietly disappears. ROAS tells you whether the ad platform is doing its job; it says nothing about whether your business is making money. The four numbers above — ROAS, net profit, ROI and break-even ROAS — give you the full picture in one screen.
The complete guide, one page at a time
Each topic below has its own page, written to answer one question properly rather than in a paragraph you have to hunt for.
How it works in 3 steps
What to type into each of the three fields, and where to find those numbers in your ad account.
Read the guide →ROAS vs ROI
Two different questions. Confusing them is the most expensive mistake in paid media.
See the difference →The formulas we use
Every calculation on this page, written out and worked through with real numbers.
See the formulas →Break-even ROAS
The minimum multiple you must hit to stop losing money — and how to find yours.
Find your number →Common mistakes
Five habits that make a ROAS figure lie to you, and what to do about each.
Avoid them →Frequently asked questions
What counts as a good ROAS, what belongs in COGS, whether your data is stored.
Read the FAQ →Why break-even ROAS is the number that matters
A ROAS of 2.8× means nothing on its own. For a software business on 85% margins it is a licence to print money; for a reseller on 20% margins it is a slow bleed. Break-even ROAS converts that vague figure into a yes or no, because it is derived from your margin rather than an industry average.
The gauge under the results shows exactly where you stand: the midpoint is your break-even, anything to the right is profit, anything to the left is money leaving the business. The full explanation lives here.
Works with every ad platform
The maths is platform-agnostic. Take the spend and the attributed revenue from Meta Ads, Google Ads, TikTok Ads, Amazon Ads, Pinterest or LinkedIn, add your cost of goods, and the calculator handles the rest. Just compare like with like — same campaign, same date range, and revenue net of tax. The mistakes page covers the traps that make those comparisons wrong.
Private by design
There is no account, no email wall and no server. Your ad spend, revenue and cost figures are processed by JavaScript inside your own browser and never leave your device. The only thing stored locally is your currency and theme preference, so the tool remembers them next time. Details in our Privacy Policy.