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Both calculators run independently — change the inputs on either side to compare results.

Customer Acquisition Cost Calculator

Calculate customer acquisition cost (CAC) by dividing total marketing and sales spend by the number of new customers acquired. Use it as the single most important unit-economics metric for any growth business — alongside customer lifetime value, it determines whether your business model is sustainable.

Total Marketing Cost ($)

New Customers Acquired

Ecommerce

Cost Per Acquisition Calculator

Calculate cost per acquisition (CPA) by dividing marketing spend by the number of new customers (or conversions) acquired. Use it as a primary efficiency metric for paid acquisition channels and a key input for sizing acquisition budgets against customer lifetime value.

Marketing Spend ($)

New Customers Acquired

Key differences

	Customer Acquisition Cost Calculator	Cost Per Acquisition Calculator
Category	Marketing	Ecommerce
Inputs required	2	2
Result	Customer Acquisition Cost ($)	Cost Per Acquisition ($)
What it does	Calculate customer acquisition cost (CAC) by dividing total marketing and sales spend by the number of new customers acquired. Use it as the single most important unit-economics metric for any growth business — alongside customer lifetime value, it determines whether your business model is sustainable.	Calculate cost per acquisition (CPA) by dividing marketing spend by the number of new customers (or conversions) acquired. Use it as a primary efficiency metric for paid acquisition channels and a key input for sizing acquisition budgets against customer lifetime value.