Return on Ad Spend Calculator
Calculate Return on Ad Spend (ROAS as a multiplier and percentage), break-even ROAS thresholds based on product margins, and net profit after ad spend.
Needed to compute break-even ROAS
ROAS & Break-Even Formulas
ROAS = Attributed Ad Revenue / Ad Spend; Break-Even ROAS = 1 / Gross Profit Margin %; Net Ad Profit = (Revenue × Margin %) - Ad Spend- ROAS Multiplier: Dollars of sales generated for every $1 spent on advertising (e.g. 4.0x = $4 revenue per $1 ad spend).
- Break-Even ROAS: The exact minimum ROAS required to cover product COGS and avoid losing money on ad campaigns.
- Net Profit After Ads: Real gross profit dollars remaining after paying the ad invoice.
- ROAS vs ROI: ROAS measures gross top-line revenue efficiency, whereas ROI measures bottom-line net profit.
Step-by-Step Worked Example
Calculation Steps:
How to Use This Calculator
Assumptions & Limitations
- Revenue attributed according to your chosen attribution window (e.g. 7-day click / 1-day view).
- Assumes product margin covers manufacturing and direct fulfillment.
Frequently Asked Questions
What is a good ROAS for e-commerce?
A "good" ROAS depends entirely on your gross margin. If your margin is 80%, a 2.0x ROAS is profitable. If your margin is 25%, you need at least a 4.0x ROAS just to break even.
Why is high ROAS sometimes misleading?
A high ROAS (e.g. 8.0x) on brand search campaigns usually captures customers who were already going to buy anyway. Blended ROAS across prospecting and retargeting gives the true picture.
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