TAM SAM SOM Calculator
Size your market from the bottom up.
Enter your values
Results update instantly as you type — no submit needed.
Results
- SOM (realistic)
- $1,200,000.00
- TAM
- $120,000,000.00
- SAM
- $30,000,000.00
- Customers in SOM
- 2,500
Quick answer
TAM is the whole market, SAM the part you can serve, SOM the share you can realistically win.
TAM = customers × annual revenue per customer
How to use the TAM SAM SOM Calculator
- 1Estimate total potential customers.
- 2Enter annual revenue per customer.
- 3Set the shares you can serve and win.
Frequently asked questions
Why bottom-up?
Investors distrust top-down 'if we get 1% of a billion' claims.
What SOM is credible?
1–5% of SAM within three years for a new entrant.