Break-Even ROAS Calculator
Find the minimum Return on Ad Spend needed to cover your costs, based on profit margin.
Gross profit as a percentage of revenue (profit ÷ revenue × 100).
= 250% of ad spend needs to come back as revenue just to break even.
Break-Even ROAS = 1 / Profit Margin
Substitution: 1 / 40.00% = 1 / 0.4000 = 2.50x
With a 40.00% profit margin, your break-even ROAS is 2.50x (or 250% of ad spend returned as revenue) — every $1 in ad spend needs at least $2.50 in revenue just to cover the ad cost.
How Break-Even ROAS Works
Return on Ad Spend (ROAS) is revenue divided by ad spend. The break-even ROAS is the specific ROAS at which every dollar spent on advertising is exactly recovered by gross profit — no more, no less. Below it, ads lose money overall; above it, ads generate net profit after covering the cost of goods.
The formula is simply Break-Even ROAS = 1 ÷ Profit Margin, where profit margin is expressed as a fraction of revenue (e.g. 40% margin → 0.40). A thinner margin means you need a much higher ROAS just to break even: a 20% margin product needs a 5x ROAS to break even, while a 50% margin product only needs 2x.
Use this alongside your actual campaign ROAS to see how much of a safety buffer you have — and remember that break-even ROAS only accounts for cost of goods, not fixed overhead, returns, or platform fees, so many advertisers target a ROAS meaningfully above break-even.
Private & free — this tool runs entirely in your browser.