ACoS (Advertising Cost of Sale) shows how much you’re spending on ads to generate sales. The lower your ACoS, the more cost-effective your campaigns are!
It is calculated with this formula,
ACoS = (Ad Spend ÷ Ad Revenue) × 100
Let’s say you spent $50 on ads and made $200 in sales from those ads. Your ACoS would be:
(50 ÷ 200) × 100 = 25%