ROAS Calculator – Return on Ad Spend

ROAS (Return on Ad Spend) measures how much revenue you generate for every dollar spent on advertising. A ROAS of 4:1 means you earn $4 for every $1 spent on ads. It's the key metric for determining advertising profitability and budget allocation. Worked example: $4,000 of ad spend generating $12,000 in attributed revenue is a 3.0× ROAS (300%). With a 30% product margin, break-even ROAS is 1 ÷ 0.30 = 3.33× — so 3.0× is actually losing money on that catalog.

1. 1

   Step 1

   Enter total revenue attributed to advertising campaigns

2. 2

   Step 2

   Input total advertising cost for those campaigns

3. 3

   Step 3

   Calculator divides revenue by ad cost

4. 4

   Step 4

   Result shows your return multiplier (e.g., 4x or 400%)

5. 5

   Step 5

   Net profit is also calculated (revenue minus ad cost)

• 1

  Minimum profitable ROAS depends on margins - 30% margin requires at least 3.3x ROAS to break even

• 2

  Track ROAS by campaign, ad set, and creative level for granular optimization

• 3

  Account for attribution model when comparing ROAS across channels

• 4

  Average ROAS benchmarks: E-commerce 4:1, B2B 5:1, Brand campaigns 2:1

• 5

  Consider customer lifetime value - lower initial ROAS may be acceptable for repeat customers

• Ignoring Profit Margins

• Attribution Errors

• Excluding Overhead Costs

• Focusing on Short-Term ROAS