CPA Calculator — Cost Per Acquisition
Free CPA calculator. Calculate your cost per acquisition to measure marketing efficiency.
Formula: Total Marketing Cost / Number of Acquisitions
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What Is This Calculator?
Cost Per Acquisition (CPA) measures the total cost of acquiring one paying customer through a specific channel or campaign. It is a critical metric for evaluating marketing ROI and budget allocation. Lower CPA means more efficient spending.
How to Calculate
To calculate CPA: 1) Sum all costs for the campaign (ad spend, tools, labor). 2) Count the total number of customers acquired. 3) Divide total cost by acquisitions. Formula: CPA = Total Cost / Acquisitions.
Examples
Example: You spend $5,000 on a Google Ads campaign and acquire 50 customers. CPA = $5,000 / 50 = $100 per customer.
Recommended Tools
HubSpot and Google Analytics can track CPA across campaigns automatically with proper UTM tagging and conversion tracking.
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