Is the Break-Even ROAS Calculator free?
Yes. This calculator is free to use with no sign-up, and all calculations run in your browser.
Does it send my numbers to a server?
No. Every input and calculation stays in your browser, so your pricing and cost data never leaves your device.
Does it assume a specific currency?
No. The calculator is currency-neutral and uses the same unit across all inputs, so you can work in any currency.
What is max CAC in this tool?
In this simple version, max CAC matches the maximum ad spend one order can support before it stops breaking even.
What is break-even ROAS in plain terms?
Break-even ROAS is the return on ad spend at which one order's revenue exactly covers its product cost, fees, and any target profit, the point where the order neither gains nor loses money.
What is a good break-even ROAS?
The question does not quite work. Break-even ROAS is not good or bad, it is mechanical: it falls straight out of your margin. A low break-even ROAS means a fat margin and a lot of room to buy traffic. What you want is a target ROAS comfortably above break-even, and how far above depends on how much profit you need from each order.
Why does it refuse to calculate?
Because the contribution margin came out at zero or below. Your costs plus your target profit meet or exceed the selling price, so there is no room for any ad spend at all and the break-even ROAS is undefined. Lower a cost, lower the target profit, or raise the price.
How do I account for refunds?
There is no refund field, so fold it in yourself. The simplest approach is to add the expected refund cost per order to the fees field: on a 100 product with a 5 percent refund rate that never resells, add 5. The alternative is to reduce the selling price to your expected net revenue per order.
Is max CAC the same as break-even CPA?
Yes. In this single-order model the maximum you can pay to acquire a customer is the contribution margin, which is also the maximum you can spend to get one order. They separate once you introduce repeat purchases, where max CAC can be raised against lifetime value, and this calculator does not model that.
Which currency does it use?
None, deliberately. Every input is in whatever unit you type, and every output is in the same unit. Keep all five fields in one currency and the answer is correct in that currency. The ROAS multiple itself is currency-free.
Are my numbers sent anywhere?
No. The arithmetic runs in your browser and the inputs never leave the page. Your product costs and margins stay on your machine, which is not something you can say about most spreadsheet templates.