Free online CAC calculator. Calculate Customer Acquisition Cost (CAC), total marketing spend, or number of new customers acquired. Essential for SaaS, e-commerce, and digital marketing teams. Pure client-side, no ads.
Customer Acquisition Cost (CAC) is a critical business metric that measures how much it costs to acquire a new customer. It is calculated by dividing total marketing and sales spend by the number of new customers acquired in a given period. CAC is essential for SaaS businesses, e-commerce stores, and any company investing in growth marketing. This calculator helps you quickly compute CAC, total marketing spend, or number of new customers — whichever two values you know. All calculations happen entirely in your browser — no data is ever sent to a server.
Customer Acquisition Cost (CAC) is the total cost of marketing and sales efforts required to acquire a new customer. The formula is: CAC = Total Marketing Cost / New Customers Acquired. It is one of the most important metrics for businesses investing in growth.
A good CAC depends heavily on your industry and business model. SaaS B2B typically sees $200–$1,000, SaaS B2C $50–$200, e-commerce $30–$50, FinTech $100–$300, and travel $7–$30. The most important benchmark is your CAC-to-LTV ratio — aim for at least 3:1 (LTV is 3x CAC).
Use the formula: Total Marketing Cost = CAC × New Customers. For example, if your CAC is $200 and you acquire 100 customers, your total marketing cost is $20,000.
CAC (Customer Acquisition Cost) includes all marketing and sales costs divided by total new customers. CPA (Cost Per Acquisition) is typically used for paid advertising only and measures the cost per conversion from a specific campaign or channel. CAC is broader and more strategic; CPA is more tactical.