Business

Customer Acquisition Cost Calculator

Calculate customer acquisition cost by dividing acquisition spending by new customers gained.

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Customer Acquisition Cost Calculator

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Marketing Metrics & Customer Economics

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How to use this customer acquisition cost calculator

Enter the requested values above and select Calculate. The result updates immediately on the page, so you can change one value and compare different scenarios without leaving the calculator.

Formula and method

CAC = acquisition spending ÷ new customers.

Example

$25,000 in acquisition spending divided by 500 new customers equals $50 CAC.

What this calculator is useful for

Calculate customer acquisition cost by dividing acquisition spending by new customers gained. It is designed for quick estimates and everyday problem solving. When a calculation affects a contract, tax filing, medical decision or other high-stakes situation, verify the result with the appropriate professional or authoritative source.

Calculate the cost to win a new paying customer

If sales and marketing acquisition costs total $18,000 and 120 genuinely new customers are acquired, customer acquisition cost is $150 per customer. Compare that against contribution from those customers rather than revenue alone.

What to check: Include the same acquisition-related cost categories each period. Repeat buyers, renewals, and free leads are not automatically new customers; definitions materially affect CAC.

Compare with the Cost Per Acquisition calculator when that better matches the question you are trying to answer.

Frequently asked questions

What does the Customer Acquisition Cost Calculator calculate?

Calculate customer acquisition cost by dividing acquisition spending by new customers gained.

How does the calculation work?

CAC = acquisition spending ÷ new customers.

Is this calculator free?

Yes. ERICH Calculators is free to use and no account is required.

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Method, assumptions & corrections

See how formulas, sources and limitations are handled across ERICH Calculators.