Free TAM SAM SOM Calculator

Here, TAM is population × target audience % × average spend: revenue if everyone in your defined target bought at the assumed spend level.

SAM is TAM × geographic coverage %—the portion of TAM you can reach with your current business model and footprint.

SOM is SAM × market penetration × (1 + competitive advantage %). It is your short-term realistic revenue opportunity before scaling assumptions.

TAM frames upside, SAM shows focus, and SOM tests whether you understand execution constraints. Inconsistent definitions between layers is a common red flag.