ROAS Calculator
Enter the revenue from your ads and what you spent to get your ROAS (return on ad spend) and ACoS.
Reviewed by the ToolNestr Editorial Team — July 2026
How ROAS is calculated
Return On Ad Spend (ROAS) measures the revenue generated for every dollar spent on advertising. The formula is ROAS = Revenue / Ad spend. It is expressed as a multiple — a ROAS of 4 means you earned $4 for every $1 spent on ads. The closely related metric ACoS (Advertising Cost of Sale) is the inverse: ACoS = (Ad spend / Revenue) × 100.
ROAS tells you how efficiently your ad budget is working but does not account for product costs or other business expenses. For true profitability, combine ROAS with your profit margin. For example, if your margin is 25%, you need a ROAS above 4.0 for your ad campaigns to be profitable after product costs.
Worked example
An e-commerce campaign generates $5,000 in revenue from $1,250 in ad spend.
About ROAS
Return On Ad Spend is the key metric for judging whether your advertising is working. This calculator instantly turns your campaign revenue and spend into ROAS and ACoS, so marketers, dropshippers and online sellers can quickly see how profitable their Facebook, Google, TikTok or Amazon ads really are. Pair it with the Profit Margin Calculator to see whether your ad spend is leaving you with enough profit after product costs.
How to use it
- Enter the total revenue generated from your advertising campaigns.
- Enter the total amount you spent on those ads.
- See your ROAS (return on ad spend) and ACoS (advertising cost of sale).
- Use the numbers to evaluate and optimize your ad strategy.
When to use this tool
Use this calculator after every ad campaign to quickly determine whether your marketing spend is paying off. It is particularly valuable for e-commerce businesses running multiple ad channels who need to compare ROAS across Facebook, Google, TikTok and Amazon to decide where to invest their next dollar. It also helps when reporting campaign performance to stakeholders or clients.
Tips for best results
- Attribute revenue accurately — use tracking pixels, UTM parameters and conversion tracking to ensure you're crediting the right campaigns.
- Include all ad-related costs in your spend figure, not just the platform's ad fee (creative production, tools, agency fees).
- Set a minimum ROAS target before launching campaigns so you have a clear benchmark for deciding whether to scale or pause.
What different ROAS values mean
ROAS benchmarks vary by industry and business model. Here is how different multiples typically indicate campaign performance.
Social Media Marketer
Quickly evaluate Facebook, Instagram, and TikTok campaign performance to identify winning creatives and scale the most profitable audiences.
E-commerce Owner
Compare ROAS across Google Shopping, Amazon PPC, and social channels to allocate your ad budget to the platforms that generate the best returns.
PPC Specialist
Monitor and optimize Google Ads and Bing campaign ROAS in real-time, adjusting bids and keywords to improve efficiency and meet client targets.
Agency Owner
Report campaign ROAS to clients with confidence. Use the calculator to demonstrate the value your agency delivers through ad spend management.
| Industry | Avg ROAS benchmark | Typical ACoS | Profitability context |
|---|---|---|---|
| Fashion & Apparel | 3.0–5.0× | 20–33% | Moderate margins, high competition |
| Electronics | 2.5–4.0× | 25–40% | Low margins, high volume needed |
| Home & Garden | 4.0–8.0× | 12–25% | Higher margins, strong organic overlap |
| Health & Beauty | 3.5–7.0× | 14–28% | Good margins, repeat purchase |
| Food & Beverage | 2.0–3.5× | 28–50% | Thin margins, local targeting |
| B2B / Software | 5.0–15.0× | 7–20% | High margins, longer sales cycle |
| Toys & Hobbies | 3.0–6.0× | 17–33% | Seasonal spikes, competitive |
| Automotive | 2.5–5.0× | 20–40% | Varies by part, high ticket |
How to use the ROAS calculator
Enter your ad revenue
Type the total revenue attributed to your advertising campaigns over the period you want to evaluate.
Enter your ad spend
Enter the total amount spent on ads, including platform fees and any additional costs like creative production and management tools.
Review and optimize
See your ROAS, ACoS, and net profit instantly. Use these metrics to decide which campaigns to scale, optimize, or pause.
Tips for improving ROAS
Refine your targeting
Narrow audience targeting reduces wasted spend. Use lookalike audiences, retargeting, and custom audiences based on past purchasers to focus your budget on the highest-converting segments.
Optimize your landing pages
A high ROAS starts with a great conversion experience. Fast-loading, mobile-optimized landing pages with clear calls to action can double your conversion rate and dramatically improve ROAS.
Set minimum ROAS thresholds
Before launching any campaign, define your minimum acceptable ROAS based on your profit margins. Automatically pause any campaign that falls below this threshold to protect your budget.
Frequently asked questions
What is ROAS?
Return On Ad Spend is the revenue you earn for every unit of currency spent on advertising. ROAS = revenue ÷ ad spend. A ROAS of 4 means you earned 4× what you spent.
What is a good ROAS?
It depends on your margins, but many businesses aim for a ROAS of 3–4 or higher. Lower-margin products need a higher ROAS to be profitable.
What is ACoS?
Advertising Cost of Sale is the inverse — ad spend as a percentage of revenue (spend ÷ revenue × 100). It's commonly used for Amazon ads.
How do I calculate ROAS for Facebook vs Google Ads?
The formula is the same for any platform: total revenue attributed to the ads divided by total spend on those ads. Run each campaign separately through this calculator to compare performance and decide where to allocate more budget.
What ROAS should I aim for with low-margin products?
Low-margin products need a higher ROAS to be profitable because more of each sale goes toward the cost of goods. If your profit margin is 20%, you need a ROAS above 5.0 just to break even on ad costs alone.
Is ROAS the only metric I should track?
No. ROAS tells you about ad efficiency, but you should also track customer lifetime value (LTV), cost per acquisition (CPA) and conversion rate. A campaign with a lower ROAS may still be valuable if it attracts high-LTV customers.
What is the difference between ROAS and ROI?
ROAS measures only your ad spend against the revenue it generates (revenue ÷ ad spend). ROI considers the full picture including cost of goods sold, overhead, and all other expenses. ROAS will always be higher than ROI because it ignores product costs.
Can ROAS be negative?
ROAS is always shown as a positive number (minimum 0×). If you spent money but generated no revenue, your ROAS is 0×. A negative metric would be your profit/loss in currency terms, which this calculator also shows as "profit (rev − spend)."
How do I track ROAS accurately?
Use proper conversion tracking: UTM parameters, pixel tracking, and platform-specific conversion tags. Attribute revenue to the correct campaign using the attribution model (last-click, first-click, or multi-touch) that best fits your sales cycle.
How often should I check ROAS?
Review ROAS at least weekly for active campaigns. High-volume campaigns may need daily monitoring, while low-spend campaigns can be reviewed monthly. The key is to check often enough to pause underperformers and scale winners before you spend too much on either.