How to use this calculator
- Enter acquisition sales and marketing cost, new paying customers acquired.
- Choose a display currency, then select Calculate. Results also update after a brief pause while you edit.
- Read the result with the assumptions below. Export details or save a second scenario to compare your choices.
Formula and method
Assumptions and limitations
Use figures for the same entity, currency and reporting period. The denominator must be positive. This ratio is descriptive and has no universal pass/fail threshold.
Worked example
With acquisition sales and marketing cost = 12000, new paying customers acquired = 100, cac is approximately 120.
What the result means
Use costs attributable to the same acquisition cohort; blended and paid-channel CAC are different definitions.
Common questions
How should I interpret cac?
Use costs attributable to the same acquisition cohort; blended and paid-channel CAC are different definitions.
What should I check before using this result?
Use figures for the same entity, currency and reporting period. The denominator must be positive. This ratio is descriptive and has no universal pass/fail threshold.
Methodology and transparency
Calculation specification reviewed on 2026-10-14. Mathematical implementation is tested against independent reference fixtures. This does not imply review by a licensed financial professional. Read the testing and precision policy.