ROAS and CPA
Calculator.
Find out if your ads actually make money. Return on ad spend, cost per acquisition and the break-even numbers that matter, worked out as you type.
Average order value works out to $150.
What is left of a sale after product or service costs, before ads.
Your ROAS of 3.00x clears break-even (2.50x). Every sale keeps about $10.00 after its share of ad spend.
Where the revenue goes
Hover or tap a barProfit after ads at different ROAS
At $5,000 spend| Metric | Today | What if | Change |
|---|---|---|---|
| Ad spend | $5,000 | $5,000 | no change |
| Conversions | 100 | 100 | no change |
| Revenue | $15,000 | $15,000 | no change |
| ROAS | 3.00x | 3.00x | no change |
| CPA | $50.00 | $50.00 | no change |
| Profit after ad spend | $1,000 | $1,000 | no change |
Quick start
How to use it
Enter what you spent and sold
Use one campaign, one channel or the whole account for the same date range. Revenue can be a total or your average order value.
Add your margin
Your gross margin is what is left of a sale after the cost of the product or service, before ads. This is what turns ROAS into profit.
Play with the what ifs
Move the sliders to test a bigger budget, a higher CPA or a better order value. Copy the link to share the exact numbers with your team.
Questions
Good questions.
Straight answers.
What is a good ROAS?
There is no universal good number. A good ROAS is any ROAS above your break-even ROAS, which is 1 divided by your gross margin. At a 40% margin you break even at 2.5x, so a 3x ROAS is profitable while the same 3x would lose money at a 25% margin.
What is the difference between ROAS and CPA?
ROAS (return on ad spend) is revenue divided by ad spend, so it tells you how many dollars come back for every dollar spent. CPA (cost per acquisition) is ad spend divided by conversions, so it tells you what each sale or lead costs. Stores usually steer by ROAS. Lead based businesses usually steer by CPA.
How do I calculate break-even ROAS and break-even CPA?
Break-even ROAS is 1 divided by your gross margin as a decimal, for example 1 / 0.4 = 2.5x. Break-even CPA is your average order value multiplied by your gross margin, for example $150 x 40% = $60. Above that CPA, every sale loses money before overhead.
Why does my ad platform show a different ROAS?
Ad platforms count conversions with their own attribution windows and models, and they often include view through conversions. Your store or CRM counts actual orders. For decisions, compare the platform number with your real sales for the same dates.
Does this include overhead like rent and salaries?
No. Profit after ad spend here means revenue times gross margin, minus ad spend. Fixed costs come out after that, so treat this as the money ads contribute toward covering overhead and profit.
Ready to grow?
Above break-even?
Let's make it more.
More of the right clicks and fewer wasted ones means more profit from every dollar. Let's talk about growing yours.