CPA Calculator
Calculate cost per acquisition for your marketing campaigns. Essential for measuring lead generation and customer acquisition efficiency.
Used to calculate profitability
Cost per Acquisition
$50.00
CPA = Total Cost / Conversions
Total Revenue
$15,000.00
Net Profit
$10,000.00
ROAS
3.00x
Profit per Conversion
$100.00
Break-even CPA
$150.00
Your CPA must stay below this amount to remain profitable (equal to your AOV).
Average CPA by Industry
How to Use This Calculator
Enter your total marketing spend
Input the number of conversions/acquisitions
Calculate your CPA automatically
Compare to industry benchmarks
Frequently Asked Questions
What is a good CPA?
Good CPA depends on customer lifetime value (LTV). As a rule, CPA should be less than 1/3 of LTV. E-commerce CPA might be $20-$50, while B2B SaaS could be $100-$500 depending on deal size.
How do I lower my CPA?
Lower CPA by improving targeting, optimizing landing pages, testing ad creative, using negative keywords, implementing retargeting, and focusing budget on highest-performing channels and audiences.
What's the difference between CPA and CAC?
CPA typically measures cost per conversion (lead, sign-up, sale), while CAC (Customer Acquisition Cost) specifically measures the total cost to acquire a paying customer, including all marketing and sales costs.
Should CPA include all costs?
Marketing CPA typically includes ad spend and agency fees. True CAC should include creative production, tools, team salaries, and any cost attributed to acquiring customers for accurate profitability analysis.
Why is my CPA increasing?
Increasing CPA often results from audience saturation, increased competition, ad fatigue, iOS privacy changes affecting tracking, or scaling into less qualified audiences. Review and optimize all funnel stages.
Why Use This Calculator
- Measure customer acquisition costs
- Compare efficiency across channels
- Optimize marketing spend
- Set profitable CPA targets
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"This calculator helped us justify our marketing budget to leadership with real data. Finally, a tool that speaks the CFO's language."
VP of Marketing, SaaS Company