Return on ad spend,after the margin lie.
Most ROAS tools stop at revenue ÷ spend and let you feel good about a number that's quietly losing money. This one runs your margin through it, tells you the truth about profit, and shows you where you land against your own industry.
Your numbers
Total you put into paid channels for the period.
Attributed revenue those ads brought back.
What's left after product cost: the part you actually keep before ad spend.
The verdict
ROAS
3.50×
Net profit
$5,500
ROI
110.0%
Break-even ROAS
1.67×
Beat this to keep money.
Cost per $1 revenue
$0.29
Gross profit
$10,500
Where the revenue goes
Reverse-solve · hit a target ROAS
Revenue needed
$20,000
Short by
$2,500
At $5,000 of spend, a 4.00× target needs $20,000 in attributed revenue — $2,500 more than now. Your break-even sits at 1.67× ($8,333 in revenue); below that, every sale loses money.
Sensitivity · the margin lie
Same ROAS, different outcomes
| Gross margin | Net profit | ROI |
|---|---|---|
| 20% | $-1,500 | -30.0% |
| 30% | $250 | 5.0% |
| 40% | $2,000 | 40.0% |
| 50% | $3,750 | 75.0% |
| 60% | $5,500 | 110.0% |
| 70% | $7,250 | 145.0% |
| 80% | $9,000 | 180.0% |
Your 3.50× ROAS never changes across this table — only the margin does. That's why a "good" ROAS can still lose money: at a thin margin the same revenue can't cover the same spend.
Your move
You've got the number. I find the money behind it.
ROAS 3.50× on $5,000 spend → +$5,500 net profit at 60% margin.
Send me the account behind this ROAS. In the first 30 minutes I'll show you whether the leak is the offer, the page, the audience, or the math, and what I'd fix first. Free, and you keep it whether you hire me or not.
Plain English
ROAS is a ratio. Profit is the point.
Return on ad spend (ROAS) is the revenue you earn for every dollar you put into advertising. A 4× ROAS means $4 back for every $1 spent. It's the headline number every ad platform shows you, because it almost always looks flattering.
Here's the trap: a 4× ROAS on a product with 25% margins is break even at best. After you pay for the product itself, there's nothing left to cover the ad spend. The platform calls that a win. Your bank account disagrees.
That's why this calculator asks for your gross margin. The same ROAS can be wildly profitable or quietly fatal depending on what you keep per sale. We show you the ratio, the real net profit, the ROI, and the exact ROAS you'd need to break even, so you stop optimizing toward a number that isn't yours.
The formula
ROAS = Revenue ÷ Ad Spend
Spend $5,000, make $17,500 → ROAS = 3.5×. At 60% margin you keep $10,500 of that revenue, minus the $5,000 spend = $5,500 real profit. At 25% margin the same 3.5× leaves just $4,375 − $5,000 = a $625 loss. Same ratio, opposite outcome.
What good looks like
A 'good' ROAS is the one that beats your break even and matches what strong operators in your category actually hit. Blended ecommerce benchmarks by vertical (median vs. top quartile):
| Vertical | Median ROAS | Top quartile |
|---|---|---|
| Apparel | 3× | 4.5× |
| Beauty | 2.8× | 4.2× |
| Supplements | 2.4× | 3.6× |
| Food & beverage | 3.2× | 4.8× |
| Home & garden | 3.5× | 5.2× |
| Electronics | 4× | 6× |
| Pet products | 3.1× | 4.6× |
| Subscription | 2.2× | 3.4× |
| Jewelry & accessories | 2.6× | 3.9× |
| Sports & outdoor | 3.3× | 5× |
Source: Top Growth Marketing vertical ROAS index · 2025
Your ROAS came back low. Now what?
Margin under ~30%.
The leak isn't the ad. It's the math. Raise price, lift AOV with bundles, or cut COGS before you touch a campaign. No creative survives broken unit economics.
Strong margin, weak ROAS.
This is a conversion or targeting problem. The traffic is being spent on the wrong person or landing on a page that doesn't close. Fix the page and the audience before the budget.
ROAS good on Meta, ugly blended.
Platform ROAS is overstating results. Trust MER (total revenue ÷ total spend) as the source of truth and discount the platform's own numbers accordingly.
ROAS fine but profit flat.
You're scaling spend without scaling efficiency. Each new dollar is buying worse traffic. Find your efficiency ceiling, then grow AOV and retention instead of raw budget.
Ten ways to move ROAS up
01Raise AOV
Bundles, upsells, and free shipping thresholds lift revenue per order with zero extra ad cost: the fastest ROAS lever that exists.
02Fix the landing page
A 1% → 2% conversion rate gain doubles ROAS on the same spend. Most accounts have more upside here than in the ad account.
03Cut wasted audiences
Exclude recent purchasers and dead segments. You're often paying to reach people who already converted.
04Refresh creative on a schedule
Fatigued ads quietly raise CPMs and sink ROAS. Ship fresh hooks before performance rolls over, not after.
05Move budget to winners daily
Kill losers the same day; feed proven ads. Slow reallocation is a silent ROAS tax.
06Tighten attribution
Server side tracking (CAPI) recovers conversions lost to iOS, so the platform optimizes toward real buyers.
07Lead with the offer
A stronger offer beats a cleverer ad every time. Test the deal itself, not just the headline.
08Match message to awareness
Cold traffic needs a different message than retargeting. One message for all is the most common ROAS killer.
09Lift repeat purchase
Email and lifecycle revenue stacks on top of paid, raising blended ROAS without raising spend.
10Protect margin
Every discount you give is ROAS you have to earn back. Defend price before you defend the campaign.
The vocabulary
- ROAS
- Return on ad spend: revenue earned per dollar of advertising. A ratio, not a profit figure.
- Break even ROAS
- The ROAS at which margin exactly covers ad spend: 1 ÷ gross margin. Below it you lose money.
- MER
- Marketing efficiency ratio: total revenue ÷ total marketing spend. The blended, unfoolable version of ROAS.
- ROI
- Return on investment: net profit ÷ ad spend, expressed as a percentage. Profit based where ROAS is revenue based.
- AOV
- Average order value: revenue ÷ number of orders. The cheapest ROAS lever you control.
- Gross margin
- Revenue minus cost of goods, as a percentage. What's left to pay for everything else, including ads.
ROAS questions, straight answers
There's no universal number. It depends entirely on your margin. The honest answer is: anything above your break even ROAS (1 ÷ gross margin) is profitable, and the goal is to beat your category's top quartile. For most ecommerce that lands between 2.5× and 4×, but a high margin business can thrive at 2× while a low margin one bleeds at 5×.
Keep going
A calculator tells you what. A call tells you what to do about it.
Send me the account behind these numbers. I'll tell you straight where the money's leaking and what I'd fix first — free, and you keep it whether you hire me or not.