TAM SAM SOM Calculator for Startups
Estimate total addressable market, serviceable available market, and serviceable obtainable market for your startup idea.
TAM
$0
SAM
$0
SOM
$0
Segment size
0%
Summary
Interpretation
How market sizing works for startups
Market sizing helps founders understand whether an opportunity is large enough to pursue and which slice of that market is actually realistic to target.
What TAM means
- TAM is the total possible market if every potential customer bought.
- SAM is the specific segment you can actually serve.
- SOM is the realistic portion you might capture.
Why founders use this
- To test whether a market is large enough to matter
- To narrow a broad idea into a real target segment
- To estimate realistic upside before building
- To support validation, planning, and investor messaging