ROAS Calculator

What is the roas calculator?

ROAS on its own is a meaningless target — a 3x ROAS is excellent at a 60% margin and loss-making at a 25% margin. This calculator returns your actual ROAS and ACOS from revenue and spend, then compares it against the break-even ROAS implied by your gross margin, so you know whether a campaign is genuinely profitable or just busy.

How to use it

1. 1Enter your revenue from ads and ad spend.
2. 2Adjust gross margin if they apply — leave them as they are if not.
3. 3Press Calculate. Results update instantly, so you can change a number and compare.
4. 4Read the roas and break-even roas first — those are the numbers that decide the call.
5. 5Save the result to your account if you want to come back to it later.

Frequently asked questions

What is a good ROAS?

Anything above your break-even ROAS. Divide 100 by your gross margin percentage: at a 50% margin you break even at 2x, so 3x is genuinely profitable.

ROAS or ACOS — which should I use?

They are the same relationship inverted. Ads platforms outside Amazon usually report ROAS; Amazon sellers usually work in ACOS.

Is the ROAS Calculator free to use?

Yes. The ROAS Calculator is free, unlimited and does not require an account. Creating a free account only adds favourites, saved results and history.

Is my data sent anywhere?

No. Everything runs in your browser — your figures never leave the device unless you choose to save a result to your account.