Market Size Calculator
Size your TAM, SAM, and SOM for a market opportunity.
OBTAINABLE MARKET (SOM)
$50.0M
$5.0B
TAM
$1.0B
SAM
SAM = TAM × serviceable %. SOM = SAM × obtainable %. SOM is the share you can realistically capture near-term.
What is Market Size?
TAM, SAM, and SOM break a market into three nested layers: the total market, the slice you can serve, and the share you can realistically win. Together they frame the size of an opportunity.
SAM = TAM × serviceable % · SOM = SAM × obtainable %
How to read your result
- TAM (Total Addressable Market) is total demand if you had 100% share.
- SAM (Serviceable Available Market) is the portion your product and geography can serve.
- SOM (Serviceable Obtainable Market) is what you can realistically capture near-term.
- Ground each percentage in real data, not wishful thinking.
Frequently asked questions
What do TAM, SAM, and SOM mean?
TAM is the total market, SAM is the segment you can actually serve, and SOM is the share you can realistically obtain in the near term.
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