Emerging Opportunities
Market Sizing (TAM/SAM/SOM) Calculator
A top-down TAM/SAM/SOM estimate in four inputs — enough rigor to sanity-check an idea in five minutes.
Inputs
- Total potential customers
- Revenue per customer per year
- Realistically reachable
- Achievable capture
How to use this calculator
- Enter total potential customers and revenue per customer to get TAM.
- Narrow it with your realistically reachable and achievable-capture percentages.
- SOM is the slice you could actually win. Verify it bottom-up with real acquisition math.
What each term means
- TAM
- Total addressable market: everyone who could ever buy.
- SAM
- Serviceable available market: the portion you can realistically reach.
- SOM
- Serviceable obtainable market: the share you could actually capture.
Educational disclaimer: Outputs are simplified educational estimates built from the numbers you enter — they are not financial, legal, tax, or investment advice, and real decisions deserve verified figures and qualified professionals.