The ROAS Formula
Return on ad spend (ROAS) is revenue from your ads divided by what you spent on them.
ROAS = Revenue from ads ÷ Ad spend
Example: $4,000 in sales from $1,000 of ads gives a ROAS of 4, often written as 4x or 400%.
ROAS tells you how much revenue each dollar of advertising brings back. It doesn't tell you whether you made a profit. For that, you need your break-even ROAS.
ROAS Calculator
Enter your numbers to see your ROAS and, if you add your margin, whether your ads cover their cost.
The calculator runs in your browser; nothing you type is sent anywhere.
Break-Even ROAS
Your break-even ROAS is the point where ad revenue exactly covers ad spend after your other costs. The formula is simple:
Break-even ROAS = 1 ÷ Profit margin before ad spend
Profit margin before ad spend means what's left of each sale after product cost, shipping, payment fees, refunds and other per-order costs. If a $100 order costs $60 to fulfil, your margin is 40%, and your break-even ROAS is 1 ÷ 0.40 = 2.5.
Calculated as 1 ÷ margin. Higher margins need a lower ROAS to break even.
This is why there's no universal "good ROAS". A course with 80% margins is profitable at 2x; a store with 25% margins loses money at 3x.
Setting a Target ROAS
Break-even is a floor, not a goal. Many advertisers set a target above it to cover overheads and leave profit. If your break-even is 2.5x, a target of 3x or more gives you breathing room.
If customers buy again, you can justify a lower first-purchase ROAS, because later orders add profit. Just be honest about how many really return, and track repeat revenue back to the original ad where you can.
ROAS vs ROI vs CPA
| Metric | Formula | Best for |
|---|---|---|
| ROAS | Revenue ÷ ad spend | Comparing campaigns and ads quickly |
| ROI | (Profit − cost) ÷ cost | Judging overall profitability |
| CPA | Ad spend ÷ conversions | Lead gen and fixed-price offers |
| EPC | Revenue ÷ clicks | Affiliates and bought traffic |
Why Your ROAS Depends on Attribution
ROAS is only as good as the revenue number behind it. Meta, Google and your email tool may each claim the same sale, so platform ROAS figures often add up to more revenue than you actually earned. iOS settings and ad blockers can also hide sales, which pushes reported ROAS down.
For decisions, calculate ROAS from one consistent source tied to real sales, ideally an independent tracker that credits each sale once. Our attribution guide explains why.
How to Improve ROAS
- Cut what doesn't sell, judged on real revenue, not platform-reported conversions.
- Stop paying for junk clicks, especially on search and display. See click fraud prevention.
- Feed better conversion data back so the platforms find buyers, not clickers.
- Raise average order value with bundles and upsells, and track them to the original ad.
- Improve the landing page before raising the budget.
Tracking ROAS Automatically
ClickMagick pulls your ad spend from connected Google, Meta, TikTok and Microsoft accounts and puts it next to attributed revenue, so you see ROAS by campaign and ad without spreadsheets. Because it records sales with first-party tracking and filters bots, the revenue side is more complete and the click side is cleaner.
See true ROAS for every campaign, with costs synced automatically.
Try ClickMagick FreeFrequently Asked Questions
What is the formula for ROAS?
ROAS equals revenue from ads divided by ad spend. If $1,000 of ads produced $4,000 in sales, your ROAS is 4, often written as 4x or 400%.
What is break-even ROAS?
Break-even ROAS is the ROAS at which your ads exactly cover their own cost. It equals 1 divided by your profit margin before ad spend. With a 40% margin, you need a ROAS of 2.5 to break even.
What is a good ROAS?
Any ROAS comfortably above your break-even ROAS is good for you. A 3x ROAS is excellent for a business with 60% margins and a loss for one with 25% margins, so compare against your own break-even, not industry averages.
What's the difference between ROAS and ROI?
ROAS compares revenue with ad spend only. ROI compares profit with all costs. A campaign can have a healthy-looking ROAS and still lose money once product, shipping and other costs are included.
Why does my ROAS differ between Ads Manager and my tracker?
Each tool attributes revenue differently, using different windows and rules, and some miss sales to iOS settings and ad blockers. Use one consistent source, ideally an independent tracker tied to real sales, for decisions.