CPA Calculator
Last updated: October 15, 2026
Calculate advertising cost per acquisition and estimate acquisitions available from a future budget.
Cost per acquisition (CPA)
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- Estimated acquisitions from future budget: —
- Revenue from current acquisitions: —
- Return on ad spend: —
- Gross value minus ad spend: —
On this page
Quick summary: Calculate advertising cost per acquisition and estimate acquisitions available from a future budget.
Read the method, example and limitations
Updated reference sections in this guide are in English.
Guide language: English. Updated October 15, 2026.
What this calculator estimates
CPA Calculator
Inputs and units
Use the units shown for Advertising spend ($), Conversions or acquisitions, Future campaign budget ($), Average value per acquisition ($). Required fields cannot be blank. Use zero only where that field and the model allow it. Select Calculate after changing a scenario.
Method and assumptions
Cost per acquisition equals advertising spend divided by acquisitions. A future acquisition projection needs positive CPA. ROAS needs positive advertising spend. Zero-cost results do not establish a finite future forecast.
Worked example
Zero spend and 100 acquisitions give CPA zero; future acquisitions from a positive budget and ROAS are undefined.
Limitations
This is advertising CPA, not a fully loaded customer-acquisition cost. Attribution and future pricing are assumptions.