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Target ROAS Calculator for Google Ads and Meta

A target ROAS is a break-even ROAS with your profit added back. Enter the margin you want to keep and the calculator gives you the bid target for each platform and the cost per order it implies.

2.50target ROAS
55%contribution margin
$24target cost per order
$33left per order before ads
Google Ads target ROAS field
250%
Meta ROAS goal (decimal)
2.50
Break-even ROAS
1.82
Ad spend per order at break-even
$33

To keep 15% of the price as profit, the campaign needs a ROAS of 2.50 (250% in Google's field). Below 1.82 you lose money on every order.

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 set a target ROAS in Google Ads?

Google Ads takes target ROAS as a percentage of ad spend. If you need 2.5 dollars of revenue per dollar of spend, enter 250 percent. Set it at or slightly above the number this calculator gives, then lower it gradually as the campaign builds conversion data.

What is the difference between target ROAS and break-even ROAS?

Break-even ROAS is the point where an order neither makes nor loses money after variable costs. Target ROAS adds the profit you want to keep. If break-even is 1.8 and you want 15 percent of the price as profit, the target is higher, and the calculator works it out from your margin.

How do I convert a CPA target into a ROAS target?

Divide your average order value by the CPA. A 60 dollar order at a 20 dollar CPA is a ROAS of 3.0. The calculator shows the cost per order that matches your ROAS so you can set either kind of bid strategy.

Why does Meta want a decimal and Google a percentage?

Convention, nothing more. Meta's ROAS goal field takes 2.5, Google's target ROAS field takes 250. Both mean 2.5 dollars of attributed revenue for each dollar spent.

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