ROAS & Break-Even ROAS Calculator
Enter your ad spend, revenue, and gross margin percentage. The calculator shows your ROAS, the break-even ROAS threshold for your margin, and whether the campaign is actually profitable — not just generating revenue.
Your ROAS
4.00×
revenue ÷ spend
Break-Even ROAS
3.33×
1 ÷ margin = threshold
Gross Profit from Ads
$500.00
revenue × margin − ad spend
Profit ROAS (margin-adjusted)
0.20×
gross profit ÷ spend · > 0 = profitable
Campaign summary
Ad spend vs gross profit
How it works
ROAS (Return on Ad Spend) is revenue ÷ ad spend. A 4× ROAS means every dollar spent generated four dollars in revenue. It sounds simple, but ROAS alone is the most misread metric in paid advertising. It measures revenue, not profit. If your product has a 30% gross margin, you need a 3.33× ROAS just to cover what you paid for the ad — a 3× ROAS at 30% margin actually loses money on every campaign dollar. The break-even ROAS is 1 ÷ gross margin, and that is the number that matters for profitability.
Profit ROAS (the margin-adjusted view) = gross profit ÷ ad spend = (revenue × gross margin − ad spend) ÷ ad spend. When profit ROAS is positive, the campaign covers both cost-of-goods and the ad spend itself. When it is zero, you are exactly at break-even. When it is negative, the campaign is running at a loss regardless of how large the ROAS headline looks. This calculator shows both numbers side-by-side so the gap between them is impossible to miss.
Break-even ROAS depends entirely on your gross margin, not on industry averages. A software company with 80% margins breaks even at 1.25× ROAS; an ecommerce brand at 25% margins needs 4× just to break even. Before setting ROAS targets in your ad platform, calculate the break-even threshold for your specific margin. Any target below that threshold guarantees a loss no matter how much revenue the ads appear to drive.
Frequently asked questions
What is a good ROAS?+
A good ROAS is any number above your break-even ROAS — and that depends entirely on your gross margin. For a 40% margin product, the break-even ROAS is 2.5×; for a 20% margin product, it is 5×. Industry benchmarks ("4× is good for ecommerce") are shortcuts that ignore your actual cost structure. Calculate your own break-even first, then set your target ROAS at a level that leaves enough margin after ad spend to cover overhead and generate a net profit. This calculator cannot tell you what number is right for your business — only your margin and cost structure can.
Why does my 3× ROAS campaign show a loss?+
Because ROAS measures revenue multiples, not profit. At 30% gross margin, every dollar of revenue leaves only $0.30 after cost-of-goods. To get back the dollar you spent on ads, you need $1 ÷ 0.30 = $3.33 in revenue — a 3.33× ROAS. A 3× ROAS at 30% margin generates $0.90 in gross profit against $1.00 in ad spend, which is a $0.10 loss on every ad dollar. This is the most common hidden problem in paid advertising: campaigns that look profitable by ROAS but are quietly destroying margin.
Should I optimize for ROAS or profit ROAS?+
Optimize for profit ROAS (gross profit ÷ ad spend) rather than headline ROAS wherever your ad platform allows it. Headline ROAS is useful as a fast signal and for platform bidding algorithms, but it cannot distinguish a profitable campaign from a loss-making one when margins vary across products. If you sell products with different margins in the same campaign, a blended ROAS target is especially misleading — a mix of high-margin and low-margin products can produce a healthy blended ROAS while the low-margin items destroy profitability. Use margin-adjusted ROAS or target ROAS per product group instead.