Enter your ad spend and revenue to instantly calculate ROAS as a ratio, percentage, and net profit or loss. Includes breakeven ROAS calculation based on your profit margins.
Last updated: March 2026 · Reading time: 7 min
This ROAS calculator divides your revenue from ads by your total ad spend to produce a ratio. A ROAS of 4x means you earn $4 for every $1 spent on ads. The calculator also shows the result as a percentage (400%) and calculates net profit or loss by subtracting spend from revenue.
If you enter your profit margin, the calculator goes further: it computes your breakeven ROAS, which is the minimum ROAS you need to cover both ad costs and product/service costs. A business with 40% profit margins needs a ROAS of at least 2.5x just to break even.
The ROAS formula is straightforward: divide revenue generated from ads by the cost of those ads.
ROAS (Return on Ad Spend): The revenue earned per dollar spent on advertising, calculated as Revenue from Ads / Ad Spend.
| Calculation | Formula | Example |
|---|---|---|
| ROAS Ratio | Revenue / Ad Spend | $20,000 / $5,000 = 4.0x |
| ROAS Percentage | (Revenue / Ad Spend) x 100 | ($20,000 / $5,000) x 100 = 400% |
| Net Profit | Revenue – Ad Spend | $20,000 – $5,000 = $15,000 |
| Breakeven ROAS | 1 / Profit Margin | 1 / 0.40 = 2.5x |
The breakeven calculation is the one most advertisers miss. A 4x ROAS sounds great, but if your profit margin is 20%, your breakeven ROAS is 5x. That 4x ROAS is actually losing money after accounting for the cost of goods sold. Always calculate breakeven ROAS before setting campaign targets.
The “right” ROAS depends on your profit margins, business model, and growth stage. There is no universal good ROAS. Here are benchmarks by vertical based on data from Google Ads Benchmarks (2024) and our own client data across 100+ accounts:
| Industry | Typical ROAS Range | Breakeven ROAS (est.) |
|---|---|---|
| Ecommerce (general) | 3x – 5x | 2.0x – 3.3x |
| Ecommerce (luxury/high margin) | 5x – 10x | 1.5x – 2.0x |
| DTC Brands | 2x – 4x | 2.5x – 4.0x |
| SaaS (with LTV) | 5x – 15x | 1.5x – 3.0x |
| Lead Gen (B2B) | 3x – 8x | Varies by close rate |
| Local Services | 5x – 12x | 2.0x – 3.0x |
A DTC brand with 30% margins and a ROAS of 2.5x is barely breaking even. The same 2.5x ROAS for a SaaS company with 80% margins is highly profitable. Context is everything. Don’t compare your ROAS to an industry average without accounting for your own unit economics.
For SaaS and subscription businesses, consider lifetime value (LTV), not just first-purchase revenue. If your average customer pays $100/month and stays for 18 months, a $200 acquisition cost (ROAS of 0.5x on first purchase) is still profitable when measured against $1,800 in LTV.
“ROAS without margins is a vanity metric. I’ve seen ecommerce founders celebrate a 3x ROAS while losing money on every order because their COGS ate 70% of revenue. Your breakeven ROAS is the number that matters. Calculate it, set your Google Ads Target ROAS 20% above it, and optimize from there.”
Hardik Shah, Founder of ScaleGrowth.Digital
Three errors come up repeatedly when advertisers calculate ROAS:
Use our CPC calculator alongside ROAS to model different cost scenarios, and our CPM calculator for display and video campaigns where impressions matter more than clicks.
Calculate cost per click from total spend and clicks, or model budget scenarios.
Calculate cost per 1,000 impressions with platform benchmarks.
38-point audit to find wasted spend and improve ROAS.
A good ROAS depends on your profit margins. For ecommerce with 30-50% margins, aim for 3x-5x. For SaaS with 70-80% margins, even 2x can be profitable. The key metric is your breakeven ROAS (1 / profit margin). Any ROAS above that number generates profit.
ROAS measures revenue per dollar of ad spend (Revenue / Ad Spend). ROI measures profit per dollar of total investment ((Revenue – Total Costs) / Total Costs). ROAS only accounts for ad spend. ROI includes all costs: ad spend, product costs, salaries, tools, and overhead. ROAS of 4x does not mean 400% ROI.
Breakeven ROAS = 1 / Profit Margin. If your gross profit margin is 40% (0.40), your breakeven ROAS is 1 / 0.40 = 2.5x. This means you need to earn at least $2.50 in revenue for every $1 in ad spend to cover both ad costs and product costs.
Google Ads and Google Analytics use different attribution models and conversion windows. Google Ads uses its own conversion tracking (typically last-click within Google Ads). GA4 uses data-driven attribution across all channels. GA4 may attribute some conversions to organic or direct that Google Ads claims. Discrepancies of 10-30% are normal.
Use Target ROAS bidding only when your campaign has at least 15 conversions in the last 30 days (Google’s recommendation). Set your initial target 10-15% below your actual ROAS to give the algorithm room to learn. Overly aggressive ROAS targets will suppress your impressions and volume.
Our PPC team manages Google Ads and Meta Ads accounts for brands spending $10K-500K/month. We optimize for profitable ROAS, not vanity metrics.