The ROAS formula
ROAS = Revenue from ads ÷ Ad spend
Example: if you spent $5,000 on ads and generated $20,000 in revenue from those ads, your ROAS is 4× (or 400%). Both expressions are correct — 4× and 400% ROAS mean the same thing.
Use the ROAS Calculator to calculate ROAS, revenue from ROAS, or required spend — plus your break-even ROAS based on gross margin.
Important: "revenue from ads" should only include revenue that is directly attributable to your ad campaigns — not total revenue. The attribution model you use (last click, data-driven, linear) will significantly affect this number.
Break-even ROAS formula
Break-even ROAS = 1 ÷ gross margin %
This is the ROAS at which ad revenue exactly covers the cost of goods — before overhead. To target profitability, your target ROAS should be higher than break-even by enough to cover operating costs.
Example: gross margin 40% → break-even ROAS = 1 ÷ 0.40 = 2.5×. If your business has 20% operating costs (staff, rent, software), your profitable ROAS target is approximately 1 ÷ (0.40 − 0.20) = 5.0×.
| Gross margin | Break-even ROAS | Example |
|---|---|---|
| 25% | 4.0× | Fashion with high COGS |
| 35% | 2.86× | Consumer electronics |
| 45% | 2.22× | Home goods |
| 55% | 1.82× | Cosmetics / beauty |
| 65% | 1.54× | Software (SaaS) |
| 75% | 1.33× | Digital products |
| 85% | 1.18× | Pure software / apps |
Blended vs channel ROAS
Channel ROAS measures return for a single platform: your Google Ads ROAS, your Meta ROAS. It's useful for optimisation decisions within a channel.
Blended ROAS (also called MER — Marketing Efficiency Ratio) measures total revenue ÷ total ad spend across all channels. It is more accurate for business-level profitability decisions because it accounts for cross-channel attribution overlap.
Example: a customer sees a Meta ad (awareness), a YouTube ad (consideration), and a Google Search ad (purchase). Last-click attribution gives 100% of the ROAS credit to Google Search — making Meta and YouTube appear to have low ROAS. Blended ROAS distributes the revenue across all touchpoints, giving a more accurate picture of overall ad efficiency.
Use channel ROAS for in-platform optimisation (bid decisions, budget allocation within a channel). Use blended ROAS for overall budget decisions and business performance reporting. If your channel ROAS is high but blended ROAS is low, your channels are cannibalising each other's attribution.
Attribution and ROAS accuracy
The attribution model determines which touchpoints get credit for a conversion — and therefore what ROAS each channel reports. The same campaigns produce very different ROAS numbers depending on the model used.
- Last-click attribution gives 100% credit to the final touchpoint. Overstates Search ROAS, understates awareness channels (Meta, YouTube, Display).
- First-click attribution gives 100% credit to the first touchpoint. Overstates awareness channels, understates retargeting and Search.
- Data-driven attribution (Google's default) distributes credit based on actual conversion probability contribution. Most accurate for optimisation but requires sufficient conversion volume (50+ per month).
- Linear attribution distributes credit equally across all touchpoints. Useful as a sanity check against single-touch models.
ROAS benchmarks in industry studies typically use last-click attribution. When comparing your ROAS to benchmarks, check which attribution model your platform is using.
2026 ROAS benchmarks
| Industry | Blended avg ROAS | Break-even (40% margin) |
|---|---|---|
| Entertainment / Media | 5.0× | 2.5× |
| Consumer Goods | 4.5× | 2.5× |
| E-commerce / Retail | 4.2× | 2.5× |
| Travel | 4.0× | 2.5× |
| Legal | 3.8× | 2.5× |
| Finance | 3.6× | 2.5× |
| Education | 3.5× | 2.5× |
| Healthcare | 3.3× | 2.5× |
| Real Estate | 3.1× | 2.5× |
| B2B / SaaS | 2.8× | 2.5× |
For ROAS benchmarks by country: USA · UK · Germany · Australia · India
Frequently asked questions
What is a good ROAS?
A good ROAS is any number above your break-even ROAS. For a business with 40% gross margin, break-even is 2.5× — so 3.5× is good, 5× is excellent. The 2026 industry average for e-commerce is 4.2×. See What is a good ROAS for a full breakdown by platform and industry.
Is ROAS the same as ROI?
No. ROAS measures revenue per dollar of ad spend. ROI measures profit per dollar invested. ROAS = Revenue ÷ Ad Spend. ROI = (Revenue − Total Costs) ÷ Total Costs. A 4× ROAS does not mean 300% ROI — it means $4 revenue per $1 ad spend, before product costs, overhead, and other expenses.
How do I calculate ROAS from CPC and CVR?
ROAS = (CVR × AOV) ÷ CPC. Example: CVR 2%, AOV $85, CPC $0.85 → ROAS = (0.02 × 85) ÷ 0.85 = 1.70 ÷ 0.85 = 2.0×. This is useful for forecasting ROAS before launching campaigns — use the Budget Calculator to model different scenarios.
Calculate your ROAS now
ROAS calculator with break-even threshold, revenue projection, and required spend.