How do I estimate TAM?

Top-down: use industry reports. Bottom-up: (# of potential customers) × (average revenue per customer). Both approaches have merit; ideally use both and compare.

What SAM percentage is typical?

SAM is usually 10-40% of TAM, depending on geographic, demographic, and product-fit constraints. Be specific about why certain segments are addressable.

What SOM should I target?

SOM is typically 5-20% of SAM for startups in year 1-3. Established companies may capture 20-40%. Be realistic — investors prefer honest estimates.

Business Tool

Market Size Calculator (TAM SAM SOM)

Calculate Total Addressable Market, Serviceable Addressable Market, and Serviceable Obtainable Market. Essential for business plans, investor pitches, and market validation.

100% free — no account needed

Currency

Total Addressable Market (TAM) *

Total market potential

Serviceable Market (SAM %) *

Percentage you can serve

Obtainable Market (SOM %) *

Percentage you can realistically capture

Estimation Tips

Start with industry reports and research

Consider your geographic and demographic reach

Base this on your current market share and growth

Know Your Market

TAM, SAM, SOM analysis for your business

TAM

Total Addressable Market — the entire revenue opportunity if you captured 100% of the market.

SAM

Serviceable Addressable Market — the segment you can actually reach with your product.

SOM

Serviceable Obtainable Market — the realistic share you can capture in the near term.

Visual Funnel

See your TAM → SAM → SOM as a narrowing funnel with dollar amounts.

FAQ

Business Tools

Plan Your Market Strategy

Market analysis, content strategy, and scheduling all in one.