Complete guide
Customer Acquisition Cost Calculator: formula, example and decision guide
Divide acquisition costs by the number of new customers acquired. The result updates instantly and keeps every assumption visible.
What the Customer Acquisition Cost Calculator measures
Divide acquisition costs by the number of new customers acquired.
Use the result to compare scenarios built from the same definitions and time period.
Formula and variables
The calculator applies CAC = (marketing costs + sales costs) ÷ new customers. Each variable is entered in a labeled field and remains visible beside the answer.
CAC = (marketing costs + sales costs) ÷ new customersWorked example
$30,000 of acquisition cost for 300 customers produces $100 CAC.
Change one input at a time to see which assumption has the greatest effect on the result.
How to interpret the result
Read the main result together with the detailed rows; the headline number alone does not describe every cost, unit or assumption.
Save comparable scenarios with the copy, link, CSV or PDF controls.
Assumptions and limitations
Use one cohort and the same period for costs and customers; overhead allocation varies by business.
Real contracts, measurements, platform rules and professional standards can add inputs that this general-purpose model does not infer.
Accuracy checklist
Confirm units, time periods, fees and source figures before relying on the output.
Round the displayed answer only after the calculation; intermediate values retain full precision.
Calculation audit
| Item | What to review |
|---|---|
| Inputs | Marketing costs, Sales costs, New customers |
| Equation | CAC = (marketing costs + sales costs) ÷ new customers |
| Example | $30,000 of acquisition cost for 300 customers produces $100 CAC. |
| Limit | Use one cohort and the same period for costs and customers; overhead allocation varies by business. |
Frequently asked questions
What does this Customer Acquisition Cost Calculator calculate?
Divide acquisition costs by the number of new customers acquired.
Which formula does it use?
CAC = (marketing costs + sales costs) ÷ new customers
Does it calculate while I type?
Yes. Valid changes update the result automatically without reloading the page.
Which inputs should I verify?
Verify every unit, period, rate and fee against the source you are modeling.
Is the result exact?
Use one cohort and the same period for costs and customers; overhead allocation varies by business.
Can I save or share the result?
Yes. Copy, native sharing, WhatsApp, PDF/Print, CSV, comparison and parameterized links are available.
What to keep in mind
Use one cohort and the same period for costs and customers; overhead allocation varies by business.
Results display up to 8 decimal places; exported numbers preserve calculation precision. This is a calculation summary, not an official certificate.