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

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

Fill in the required fields to see your result.

Business

Customer Acquisition Cost (CAC) Calculator

Calculate how much it costs to acquire one new customer by dividing total sales and marketing spend by new customers gained. The denominator of the all-important CLV:CAC ratio.

Total Marketing Spend ($)

Sales Expenses ($)

New Customers Acquired (customers)

Fill in the required fields to see your result.

Key differences

	Cost Per Acquisition Calculator	Customer Acquisition Cost (CAC) Calculator
Category	Ecommerce	Business
Inputs required	2	3
Result	Cost Per Acquisition ($)	Customer Acquisition Cost ($)
What it does	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.	Calculate how much it costs to acquire one new customer by dividing total sales and marketing spend by new customers gained. The denominator of the all-important CLV:CAC ratio.