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Tool · ROAS calculator

Are your ads making money, or just sales?

Enter what you spent and what the ads sold. Work out your margin from the price, the cost and where you sell. See your ROAS against its break-even, the ROAS to aim for, and what each order and click can cost.

Checked by the BaseAcross team.

A month of ads for a $40.00 product

ROAS
3.20×$1,000 in, $3,200 out
Break-even ROAS
1.68×At a 59.4% margin
Profit after ads
$899.20Before fixed costs
Cost per order
$12.50Break-even $23.74
01 · Calculate

Do your ads pay for themselves?

Nothing is saved or sent. The example is filled in; replace it with your numbers.

The ads

1. The ads, over one period

What the ads platform reports, or better, what your shop shows came from ads.

Margin before ads

2. What a sale leaves before ads

Where you sell

Stripe's US card rate. A card from abroad adds 1.5%.

Each sale leaves $23.74, a margin of 59.4%.

Your goals

3. Your goals

As a share of revenue.

1 if they buy once. 2 if, on average, they come back once.

For the most a click can cost.

Your ROAS

3.20×

Above your break-even of 1.68×. Each $1 of ads earns $0.90 back on top.

This period

Break-even ROAS
1.68×
ACoS
31.25%
Profit after ads
$899.20
Cost per order
$12.50
Break-even per order
$23.74

For 20% profit after ads, aim for a ROAS of 2.54×.

If customers come back

Break-even on the first order
1.68×
Counting every order
1.12×
Profit over their orders
$1,848.80

Only count repeat orders you can see in your own sales. Until then, judge ads on the first order.

Spending more

  • To make $3,000.00 from ads at this ROAS, spend about $3,337.00. ROAS usually falls as spend grows, so raise it in steps.
  • At 2.5% of visitors buying, a click can cost up to $0.59 before ads lose money, or $0.39 for your target.
02 · The formulas

ROAS, break-even ROAS and the rest

Each one is the same spend, read a different way.

  • ROAS = revenue from ads ÷ ad spend. $1,000 of ads that bring in $3,200 of sales is a ROAS of 3.20×. It counts revenue, not profit.

  • Break-even ROAS = 1 ÷ margin before ads. The ROAS at which ads exactly pay for themselves. At a 59.4% margin it's 1.68×. Below it, every sale from an ad loses money.

  • Target ROAS = 1 ÷ (margin − the profit you want). For 20% profit after ads on that margin, aim for 2.54×.

  • ACoS = ad spend ÷ revenue from ads. The same measure turned round, as Amazon reports it. A ROAS of 4 is an ACoS of 25%.

  • Break-even cost per order = order value × margin. What one new order can cost in ads before it loses money. On a $40.00 order at 59.4%, $23.74.

03 · By margin

Break-even ROAS at each margin

Find your margin before ads. Any ROAS above the figure beside it makes money.

Break-even ROAS and ACoS by margin before ads
Margin before adsBreak-even ROASBreak-even ACoS
10%10.00×10%
20%5.00×20%
30%3.33×30%
40%2.50×40%
50%2.00×50%
60%1.67×60%
70%1.43×70%
04 · Questions

Questions about ROAS.

If yours is not here, email us at hello@baseacross.com before you order.

Divide the revenue your ads brought in by what you spent on them. $3,200 of sales from $1,000 of ads is a ROAS of 3.20×.

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