--- title: "What Is ROAS and How to Calculate It (With Examples)" description: "ROAS measures revenue per dollar of ad spend. Learn the formula, how to find your break-even ROAS, and why platforms report different numbers." canonical: https://adsbeast.pro/blog/en/what-is-roas-and-how-to-calculate-it-with-examples language: en published: 2026-10-07T00:51:54.265Z updated: 2026-10-07T00:51:54.265Z author: "ADS Beast editorial team" translations: - ar: https://adsbeast.pro/blog/ar/what-is-roas-and-how-to-calculate-it-with-examples - es: https://adsbeast.pro/blog/es/que-es-el-roas-y-como-calcularlo-paso-a-paso - he: https://adsbeast.pro/blog/he/what-is-roas-and-how-to-calculate-it-with-examples - ru: https://adsbeast.pro/blog/ru/chto-takoe-roas-i-kak-ego-schitat-formula-i-primery - sk: https://adsbeast.pro/blog/sk/co-je-roas-a-ako-ho-vypocitat-vzorec-a-priklady - uk: https://adsbeast.pro/blog/uk/shcho-take-roas-i-yak-yogo-rozrakhuvati-formula-ta-prikladi --- # What Is ROAS and How to Calculate It ROAS, or return on ad spend, is the revenue your ads bring in divided by what you spent on them. If a campaign earns $4,000 and costs $1,000, ROAS is 4, written as 4:1 or 400%. It tells you how efficiently ad money turns into sales, not whether you made a profit. In short: - ROAS = revenue from ads ÷ ad spend. Both numbers must cover the same period and the same attribution window. - A ROAS of 4 means four dollars of revenue per dollar spent, not four dollars of profit. - Break-even ROAS = 1 ÷ profit margin. At a 25% margin you need 4 just to cover ad costs. - Platform ROAS numbers are not comparable across channels because each counts conversions differently. - ROAS judges campaigns. ROI judges whether the whole effort, including salaries and tools, paid off. ## What is a good ROAS? There is no universal good ROAS. A number that means healthy profit for one store can mean losing money for another, because the threshold depends on your profit margin, your average order value, and how much of that revenue comes from repeat customers rather than new ones. The only meaningful benchmark is your own break-even point. Once you know it, any ROAS above it is profit and any ROAS below it is a subsidy you are paying out of margin. Comparing your 3.2 to an industry figure someone posted online tells you nothing about your business. This is also why "what is a good ROAS" is the wrong first question. The right first question is "what is my break-even ROAS," and that one has an exact answer you can calculate today. ## How to calculate ROAS Divide the revenue attributed to your ads by the amount you spent on those ads. If you spent $500 and tracked $2,000 in sales, ROAS is 4. The arithmetic is trivial; the discipline is in making sure both numbers describe the same thing. Work through it in this order: 1. Pick one channel and one date range. Mixing channels or periods produces a number that cannot be acted on. 2. Take the spend figure from the ad platform, including everything the platform charged you for that period. 3. Take the revenue figure from your own analytics or store backend, filtered to the same period. 4. Confirm the attribution window on both sides matches. A 30-day click window on one side and a 7-day window on the other will not reconcile. 5. Divide revenue by spend. Write down the window you used next to the result, because the number is meaningless without it. If the two numbers come from different systems and will not reconcile, fix that before you optimize anything. Chasing a discrepancy you do not understand is how budgets get cut on campaigns that were actually working. ## ROAS vs ROI: what is the difference? ROAS compares revenue to ad spend only. ROI compares profit to total cost, which includes production, salaries, tools, and anything else the effort consumed. A campaign can post a ROAS of 3 and still lose money if the product margin is thin. Here is how the two behave on the same campaign: | | ROAS | ROI | |---|---|---| | What goes in the top line | Revenue from ads | Profit | | What goes in the bottom line | Ad spend only | All costs: ads, production, salaries, tools | | Typical use | Judging a campaign or channel | Judging whether the whole effort was worth it | | Expressed as | Ratio or percentage (4:1, 400%) | Percentage | | Blind spot | Ignores margin and overhead | Slower to calculate, needs cost data | Use ROAS to decide whether to scale, pause, or rework a specific campaign. Use ROI when you need to answer whether the marketing function as a whole is earning its keep. The two answer different questions, and a team that reports only ROAS will eventually scale something unprofitable. ## How to find your break-even ROAS Break-even ROAS is 1 divided by your profit margin. At a 25% margin, you need a ROAS of 4 just to cover ad costs. Anything above that is profit; anything below it means the campaign is being funded by the rest of the business. The formula is worth understanding rather than memorizing, because it explains why margin matters more than the ROAS number itself. A business with a 50% margin breaks even at a ROAS of 2. A business with a 10% margin needs a ROAS of 10 before it earns a cent. Identical ad performance, opposite outcomes. Two practical notes. First, use your true margin, after product cost, shipping, payment fees, and returns, not the headline markup. Second, recalculate when costs move. A supplier price change silently moves your break-even ROAS, and campaigns that were profitable last quarter can quietly stop being so. ## Why ROAS changes from one platform to another Each platform counts conversions differently, so the same sale can be claimed twice. Google Ads uses a 30-day click window by default, adjustable from 1 to 90 days, while Meta and TikTok apply their own windows and view-through rules. This is a measurement difference, not a performance difference. The practical consequences: - Adding up ROAS from several platforms will usually overstate your total revenue, because overlapping windows double-count conversions. - A channel that looks weak may simply have a shorter attribution window than the one next to it. - View-through conversions, where someone sees an ad and buys later without clicking, inflate some platforms more than others. - Comparing platforms by reported ROAS rewards whichever platform claims the most credit, not whichever drives the most sales. Compare ROAS within one channel over time, or deduplicate conversions in your own analytics before you total anything. If you want to compare channels fairly, judge them on the same attribution model and the same window. It also helps to know the cost side of the equation in detail, which is what [CPM meaning and when it beats CPC](/blog/en/cpm-meaning-what-it-is-and-when-it-beats-cpc) covers, and how click prices form, explained in [what is cost per click and what it depends on](/blog/en/what-is-cost-per-click-cpc-formula-and-what-it-depends-on). ## What ROAS does not tell you ROAS ignores margin, overhead, and repeat purchases. It is a ratio of revenue to spend, and revenue is not profit. A high ROAS on a low-margin product can be worse than a modest ROAS on a high-margin one. What it also misses: - Customer lifetime value. A first order at break-even can be excellent if the customer returns, and terrible if they do not. - Incrementality. Some of those sales would have happened without the ad. ROAS cannot separate the two on its own. - Cost per acquisition. ROAS tells you the revenue ratio, not what you paid per customer. That figure has its own definition, covered in [what is CPA and how it differs from CPL](/blog/en/what-is-cpa-meaning-payouts-and-how-it-differs-from-cpl). - Creative performance. A strong ROAS can hide a weak click-through rate that will eventually raise your costs. [What is CTR, and when it misleads](/blog/en/what-is-ctr-meaning-formula-and-when-it-misleads) explains where that number stops being useful. Treat ROAS as one instrument on the panel. It is a fast, readable signal about whether ad money is converting into revenue, and it is not a verdict on profitability. ## Common mistakes when reading ROAS The most common mistake is treating a platform-reported ROAS as ground truth. The second is comparing ROAS across platforms with different attribution windows. The third is scaling a campaign on ROAS alone without checking margin. A few more that show up constantly: - Measuring a period too short to be meaningful, then drawing conclusions from noise. - Forgetting that spend and revenue were pulled on different days, so late conversions are missing from one side. - Counting revenue that includes organic or returning customers who would have bought anyway. - Changing creative, audience, and budget at once, then attributing the result to one of them. Before you pause a campaign on a weak ROAS reading, check whether you have enough data for the decision to mean anything. The thresholds for that judgment are laid out in [when you have enough data to switch an ad off](/blog/en/when-you-have-enough-data-to-switch-an-ad-off). ## Set up reporting you can trust The calculation is one line of arithmetic. Keeping the inputs honest is the ongoing work: consistent windows, one source of truth for revenue, and spend figures that match what the platform actually charged. If you would rather not reconcile spreadsheets by hand, [reports that bring CPA, CTR, CPC, and CPM into one place](/features/en/analytics-reports) keep the numbers on the same period and the same definitions, so a ROAS figure means the same thing from one week to the next. Start by writing down your break-even ROAS and the window you used to calculate it. Every decision after that gets easier. ## Questions and answers ### What is ROAS? ROAS stands for return on ad spend. It measures how much revenue you get for every dollar you put into advertising. The formula is simple: revenue from ads divided by ad spend. If a campaign brings in $4,000 and costs $1,000, your ROAS is 4, often written as 4:1 or 400%. ### What are ROAS and how does it differ from ROI? ROAS compares revenue to ad spend only, while ROI compares profit to total cost, including production, salaries, and tools. A ROAS of 3 can still mean you lose money if your product margin is thin. Use ROAS to judge campaign performance and ROI to judge whether the whole effort was worth it. ### What is a good ROAS? There is no universal number. A good ROAS depends on your profit margin, average order value, and how much of the revenue is repeat business. To find your break-even ROAS, divide 1 by your profit margin: at a 25% margin, you need a ROAS of 4 just to cover ad costs. Anything above that is profit. ### How do you calculate ROAS? Divide the revenue attributed to your ads by the amount you spent on them. If you spent $500 and tracked $2,000 in sales, ROAS is 4. Make sure both numbers cover the same period and the same attribution window, or the result will mislead you. ### Why does ROAS change from one platform to another? Each platform counts conversions differently. Google Ads uses a 30-day click window by default, adjustable from 1 to 90 days, while Meta and TikTok apply their own windows and view-through rules. The same sale can be claimed by two platforms, so compare ROAS within one channel or deduplicate conversions before you total them.