CPA Calculator (Cost Per Acquisition)
Calculate CPA, break-even CPA, ROAS, and true profit per order including ad spend. Works for Facebook Ads, Google Ads, TikTok Ads, and any paid channel.
By Marginory team · Online sellers with hands-on experience across Etsy, Shopify & POD
Campaign Metrics
$
%
$
Per-order Costs
$
$
Campaign Results
Conversions / orders20.0
Cost per click (CPC)$0.50
Cost per acquisition (CPA)$25.00
ROAS1.20x
Total revenue$600.00
Profitability
Break-even CPAⓘ$17.00
Profit per order (incl. CPA)-$8.00
Total campaign profit-$160.00
Profit margin (incl. ad cost)-26.7%
How this is calculated
Conversions: Clicks × Conversion rate
CPA: Ad spend / Conversions
CPC: Ad spend / Clicks
ROAS: Revenue / Ad spend
Break-even CPA: Average order value − Product cost − Other costs
Profit per order: AOV − Product cost − Other costs − CPA
Assumptions:
- Conversion rate: % of clicks that result in an order
- Other costs includes platform fees + shipping per order
- Break-even CPA: CPA at which profit = 0 (no other costs considered beyond product + other costs)