Free TAM SAM SOM Calculator
Calculate TAM, SAM and SOM from explicit serviceable and obtainable share assumptions. Free market-sizing scenario tool with transparent math.
Quick answer
TAM, SAM, and SOM are nested market-sizing scenarios. TAM is the full market under a stated definition, SAM is the portion your product can serve, and SOM is the portion of SAM you could plausibly capture within a defined horizon.
Formula
Top-down example: SAM = TAM × serviceable share; SOM = SAM × obtainable share
Example
A $500M TAM with a 30% serviceable share gives a