Free calculator: unit economics
Unit economics calculator
Turn acquisition spend and retention assumptions into a clear planning estimate for customer acquisition cost, lifetime value, and payback.
Inputs and formula
- CAC = marketing spend ÷ new customers.
- Monthly gross profit = average revenue per customer × gross margin.
- LTV = monthly gross profit ÷ monthly churn; CAC payback = CAC ÷ monthly gross profit.
Worked example
At $12,000 of marketing spend and 80 new customers, CAC is $150. With $180 average revenue, 75% gross margin, and 4% monthly churn, the planning LTV is $3,375 and payback is about 1.1 months.
Planning estimate caveat
This is a planning estimate using stable monthly churn and gross margin. Cohort retention, expansion, sales labor, discounts, refunds, and changing channel mix can materially change actual unit economics.
Put the decision into motion
Start a 14-day free trial and give your company a persistent AI executive team that keeps working between founder check-ins.