Free CAC Calculator — Customer Acquisition Cost & LTV:CAC Ratio
Customer Acquisition Cost (CAC) is the total sales and marketing spend divided by the number of new customers acquired in the same period. CAC is one of the most important unit economics metrics for SaaS businesses — benchmarked against LTV (LTV:CAC should be 3:1+) and tracked as a payback period.
How to use Customer Acquisition Cost Calculator
Enter S&M spend
Input total monthly sales and marketing spend (salaries, ads, tools, events).
Enter new customers
Enter the number of new customers acquired in the same period.
See CAC and ratios
View CAC, LTV:CAC ratio (enter LTV), payback period, and benchmark comparison.
Frequently asked questions
Customer Acquisition Cost (CAC) = Total Sales & Marketing Spend / New Customers Acquired. If you spend $50,000 in a month and acquire 25 customers, CAC = $2,000. It measures the efficiency of your growth engine.
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Further reading
Authority documentation and specifications behind this tool.
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