Meta CPA measures the average cost to generate one purchase conversion from your Meta advertising campaigns.
Meta CPA = Meta Spend ÷ Meta Purchases
Example
Your skincare brand spent $4,500 on Meta ads last month and generated 150 purchases.
How It Works
Meta calculates CPA by dividing total ad spend by purchase conversions recorded through the Meta Pixel or Conversions API. The attribution window you configure in Meta Ads Manager determines which purchases count toward each campaign. Lower CPA indicates more efficient acquisition—you’re spending less to convert each customer.
When to Use
