Unit Economics Calculator
Model simple customer-level economics.
Calculate unit economics calculator from clear inputs
Unit Economics Calculator gives a focused worksheet for finance & money questions where a quick deterministic estimate is more useful than a spreadsheet. The unit economics calculator fields mirror the variables in its formula, and the output separates the main result from supporting values so you can sanity-check this calculation before reusing it.
120 ARPU minus 45 variable cost gives 75 contribution and an 8 month CAC payback on 600 CAC.
Keep the estimate private in your browser
For Unit Economics Calculator, every calculation runs in your browser with no upload, account, cookie, live lookup, or server-side storage. The unit economics calculator result is best treated as a planning number because the real-world constraints behind this estimate can change the answer. Adjust the unit economics calculator assumptions and confirm important decisions against the relevant source of truth for that exact situation.
Frequently Asked Questions
How is CAC payback calculated?
CAC ÷ monthly contribution per customer. $120 of revenue minus $45 of variable cost leaves $75 a month, so a $600 CAC pays back in 8 months.
What is contribution margin?
The share of each customer's revenue left after variable costs: $75 of $120 is 62.5%. It is what is left to pay for acquisition, fixed costs, and profit.
What is a healthy CAC payback period?
For subscription businesses, under 12 months is often considered healthy, though longer can be fine if customers stay for years. It depends on churn.
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