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Break-Even ROAS Calculator

Break-even ROAS is one divided by your contribution margin. Put in the price and what each order costs you, and get the ROAS below which every sale loses money, in the format each ad platform wants.

1.82break-even ROAS
55%contribution margin
$33max cost per order
$33left per order before ads
Google Ads target ROAS field
182%
Meta ROAS goal (decimal)
1.82
Break-even ROAS
1.82
Ad spend per order at break-even
$33

Every dollar of ad spend has to return 1.82 dollars of revenue just to stand still. Anything reported below that is a loss on the order, whatever the dashboard colour says. Platforms report ROAS on attributed revenue, which overstates it, so run a buffer.

Formulas: contribution margin = 1 minus (cost of goods + shipping + fees + other) as a share of price. Break-even ROAS = 1 ÷ contribution margin. Target ROAS = 1 ÷ (contribution margin minus profit share). Max cost per order = price × contribution margin.

Questions people ask

How do you calculate break-even ROAS?

One divided by your contribution margin. If the price is 60, the product costs 18, shipping is 6 and fees are 2, you keep 34 of every 60, a 57 percent margin, so break-even ROAS is 1 ÷ 0.57, about 1.76. Below that every order loses money.

What is a good ROAS for Facebook ads?

There is no universal number. A good ROAS is comfortably above your own break-even. A 3.0 ROAS is excellent on a 60 percent margin and a loss on a 25 percent margin. Work out your break-even first, then judge the dashboard against it.

Why is my break-even ROAS for dropshipping so high?

Because the margin is thin. With 35 percent cost of goods, 15 percent shipping and 5 percent fees you keep 45 percent, so break-even is 2.2 before any profit. That is why dropshipping stores need either a higher price or a lower supplier cost before ads can work.

Should I enter ROAS as a percentage or a decimal?

Google Ads takes target ROAS as a percentage, so 2.5 goes in as 250 percent. Meta takes a decimal ROAS goal, so 2.5 stays 2.5. The calculator shows both.

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