E-commerce Advertising
ROAS & break-even calculator
Find out exactly when your ad campaigns become profitable. Enter your product costs, ad spend, and conversion rate to see your break-even ROAS and net profit per sale.
Product & ad details
1.52x
Your ads must generate at least this much revenue per dollar spent to break even.
-$15.01
After product cost, shipping, and ad spend per acquisition.
$32.99
66.0% margin
$48.00
$1.20 CPC at 2.5% CVR
Profitability curve
Net profit per sale at different ROAS levels. The break-even point is at 1.52x.
Profitable
ROAS > 1.5x
Losing money
ROAS < 1.5x
Profit at 3x ROAS
$16.33/sale
Profit at 5x ROAS
$22.99/sale
How the math works
// Step-by-step breakdown
Gross Margin = Selling Price − COGS − Shipping
CPA (Cost Per Acquisition) = CPC ÷ (Conversion Rate ÷ 100)
Break-Even ROAS = Selling Price ÷ Gross Margin
Net Profit Per Sale = Gross Margin − CPA
What is ROAS?
ROAS stands for Return on Ad Spend. It measures how much revenue you generate for every dollar you spend on advertising. A ROAS of 3x means you earn $3 in revenue for every $1 in ad spend.
But here's the trap: a 3x ROAS doesn't mean you're profitable. If your product costs, shipping, and other expenses eat up more than $1 of that $3 in revenue, you're losing money despite a seemingly healthy ROAS.
That's why knowing your break-even ROAS— the minimum ROAS you need to cover all costs — is critical. Anything below it and every sale is a loss. Anything above it and you're printing profit.
How to improve your ROAS
- Raise your average order value — Bundle products or set a free-shipping threshold slightly above your current AOV to increase gross margin per transaction.
- Lower your cost per click — Improve ad creative, tighten audience targeting, and use retargeting to bring CPC down without sacrificing conversion rate.
- Boost your conversion rate — A small increase in conversion rate dramatically reduces CPA. Optimize your landing page, add social proof, and reduce checkout friction.
- Negotiate product costs — A 10% reduction in COGS can shift your break-even ROAS by a full point, making profitability far easier to reach.
Frequently asked questions
- What is a good ROAS for e-commerce?
- A ROAS above 3x is generally considered good for e-commerce, meaning you earn $3 for every $1 spent on ads. However, what qualifies as 'good' depends on your profit margins — a business with thin margins needs a higher ROAS to be profitable than one with fat margins.
- How do I calculate break-even ROAS?
- Break-even ROAS = Selling Price ÷ Gross Margin. Gross Margin = Selling Price − COGS − Shipping. For example, if you sell at $50 with $15 in product cost and $5 in shipping, your gross margin is $30, and your break-even ROAS is $50 ÷ $30 = 1.67x.
- What is the difference between ROAS and ROI?
- ROAS (Return on Ad Spend) measures revenue generated per dollar of ad spend: Revenue ÷ Ad Spend. ROI (Return on Investment) measures net profit relative to total investment: (Profit − Cost) ÷ Cost. ROAS is always higher than ROI because it doesn't deduct product and operational costs.
- How do I calculate cost per acquisition (CPA)?
- CPA = CPC ÷ (Conversion Rate ÷ 100). For example, if your CPC is $1.20 and your conversion rate is 2.5%, your CPA is $1.20 ÷ 0.025 = $48.00. That means you spend $48 in ads for every sale.
- Why is my break-even ROAS so high?
- A high break-even ROAS means your gross margin is thin relative to your selling price. You can lower it by raising your price, reducing product costs, cutting shipping expenses, or improving your ad efficiency (lower CPC or higher conversion rate).
- Is this calculator free to use?
- Yes, it is completely free. All calculations run in your browser — no data is sent to any server, and no account is needed.