ROAS Calculator
Quick Answer: ROAS is revenue from ads divided by ad spend; it measures revenue efficiency, while ROI typically subtracts broader costs to assess profitability.
ROAS (Return on Ad Spend) measures revenue generated per dollar spent on advertising. Use this calculator to compute ROAS, ROI, and profit. Link to master ROI calculator, Marketing ROI guide, and gross margin.
This page provides a structured explanation of return on ad spend (ROAS) calculation and interpretation, including formulas, examples, limitations, and comparisons with related financial metrics.
When to Use This Calculation
- Comparing ad sets or campaigns on revenue efficiency
- Sizing spend before margin analysis
- Pairing with margin data for ROI
Limitations of This Metric
- ROAS ignores profit margin unless converted
- Does not include non-ad costs
- Attribution windows affect measured revenue
What Is ROI (Return on Investment)?
Return on Investment (ROI) is a financial metric used to evaluate the profitability of an investment relative to its cost. ROAS is a related ratio focused on revenue per ad dollar.
ROAS Calculator
Results
ROAS Formula
ROAS = Revenue from Ads / Ad Spend
ROAS is expressed as a ratio (e.g., 5:1) or percentage (500%). Example: $5,000 revenue from $1,000 spend = 5:1 ROAS. ROAS measures revenue efficiency; it does not subtract cost of goods sold. To get ROI, apply gross margin: Profit = Revenue × Gross Margin; ROI = (Profit − Ad Spend) / Ad Spend × 100.
When ROAS Differs from ROI
ROAS and ROI diverge when margins are below 100%. A 5:1 ROAS on 20% gross margin yields $1 of profit per $1 spent—0% ROI. At 10% margin, the same ROAS loses money. ROAS is useful for comparing ad efficiency across campaigns; ROI is required for profitability decisions. See Marketing ROI and What Is ROI? for the full picture.
Ecommerce Example
An ecommerce brand spends $20,000 on Google Ads. Revenue attributed to those ads is $80,000. ROAS = 4:1. Gross margin is 40%. Gross profit = $80,000 × 0.40 = $32,000. Profit after ad spend = $32,000 − $20,000 = $12,000. ROI = ($12,000 / $20,000) × 100 = 60%. The campaign is profitable. At 25% margin, profit would be $20,000 − $20,000 = $0—break-even.
Paid Ads Case Study
A B2B SaaS company runs LinkedIn ads at $15,000/month. Attribution (last-click, 30-day) reports $45,000 in pipeline. ROAS = 3:1. Pipeline-to-close rate is 20%; average deal size $12,000. Closed revenue = $45,000 × 0.20 × (12,000 / blended ACV) requires pipeline value modeling. If closed revenue is $30,000 and gross margin is 85%, profit = $25,500 − $15,000 = $10,500. ROI ≈ 70%. The key is connecting attributed pipeline to actual closed revenue.
Benchmark Ranges
| Industry | Typical ROAS | Notes |
|---|---|---|
| Ecommerce (D2C) | 3:1 to 5:1 | Varies by margin; 4:1 common target |
| B2B SaaS | 2:1 to 4:1 | Longer cycles; pipeline ROAS often higher |
| Lead gen | 5:1 to 15:1 | Revenue per lead × close rate |
Break-even ROAS = 1 / Gross Margin. At 30% margin, break-even ROAS = 3.33:1. See Lead Generation ROI and Email Marketing ROI for channel-specific tools.
Frequently Asked Questions
What is ROAS?
ROAS (Return on Ad Spend) is revenue generated from ads divided by ad spend. Formula: ROAS = Revenue / Ad Spend. A 5:1 ROAS means $5 revenue per $1 spent.
How does ROAS differ from ROI?
ROAS uses revenue; ROI uses profit after costs. ROAS ignores gross margin. A high ROAS can still yield negative ROI if margins are low.
What is a good ROAS?
Ecommerce often targets 3:1 to 5:1. The break-even ROAS depends on gross margin. At 30% margin, you need 3.33:1 ROAS to break even.
Should I optimize for ROAS or ROI?
Optimize for ROI (profit) when possible. ROAS is useful for revenue efficiency and quick comparison; ROI reflects true profitability.