Market Sizing Tool
Build your market sizing from the bottom up, segment by segment.
Total Addressable Market (TAM)
$1.2B
$1,200,000,000
1 segment combined
Serviceable Available Market (SAM)
$180.0M
$180,000,000
15.0% of TAM
Serviceable Obtainable Market (SOM)
$9.0M
$9,000,000
5% market share over 5 years
1. Total Addressable Market (TAM)
Build your TAM by defining customer segments (e.g., hospitals, specialty clinics, retail pharmacies)
2. Serviceable Available Market (SAM)
Filter your TAM to what you can realistically serve
What percentage of the global market can you physically or digitally serve?
$1.2B TAM × 25% geo × 60% fit
Discount for regulatory barriers, technical requirements, or other access limitations
15.0% of TAM ($1.2B)
3. Serviceable Obtainable Market (SOM)
What you can realistically capture given competition and execution
Be conservative — new entrants typically achieve 3-10% in competitive markets
Timeline to reach your target market share (typically 3-5 years for seed/Series A)
4. Market Growth Projections
5-year forecast based on expected market growth
Expected yearly market growth rate — check industry reports for benchmarks
| Year | TAM | SAM | SOM |
|---|---|---|---|
| Today | $1.2B | $180.0M | $9.0M |
| Year 1 | $1.3B | $201.6M | $10.1M |
| Year 2 | $1.5B | $225.8M | $11.3M |
| Year 3 | $1.7B | $252.9M | $12.6M |
| Year 4 | $1.9B | $283.2M | $14.2M |
| Year 5 | $2.1B | $317.2M | $15.9M |