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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

Marketing

Marketing ROI Calculator

Calculate marketing ROI as the percentage return generated by marketing spend over the cost of that spend. Use it for executive-level marketing performance reporting, channel allocation decisions, and justifying marketing budget against business outcomes.

Revenue from Marketing ($)

Marketing Investment ($)

Key differences

	Customer Acquisition Cost Calculator	Marketing ROI Calculator
Category	Marketing	Marketing
Inputs required	2	2
Result	Customer Acquisition Cost ($)	Marketing ROI (%)
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 marketing ROI as the percentage return generated by marketing spend over the cost of that spend. Use it for executive-level marketing performance reporting, channel allocation decisions, and justifying marketing budget against business outcomes.