Customer Acquisition Cost Calculator
Calculate CAC from spend, new customers, and optional target payback assumptions.
Know what each new customer costs
Customer acquisition cost turns campaign spend into a unit economics number. It helps you compare channels, spot expensive growth, and understand how much gross profit a customer must create before acquisition pays back.
CAC is simply marketing and sales spend divided by new customers won, and it only means something next to lifetime value — a healthy business keeps LTV comfortably above CAC.
Enter total sales and marketing spend, new customers, and monthly gross profit per customer. The calculator returns CAC and a simple payback estimate you can use for planning.
Private planning math
Spend and customer numbers stay in the browser. Nothing is uploaded.
Frequently Asked Questions
What is CAC?
Customer acquisition cost is sales and marketing spend divided by the number of new customers acquired.
What costs should be included?
Include ad spend, sales tools, contractors, agency fees, salaries, commissions, and campaign costs when relevant.
What is target payback?
It estimates months needed for gross profit to recover acquisition cost.
Is this private?
Yes. It runs locally in your browser.
Need sharper pricing, projections, or growth planning? Let us help.