TAM SAM SOM Calculator
Your data never leaves your browserCalculate your Total Addressable Market, Serviceable Addressable Market, and Serviceable Obtainable Market.
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About TAM SAM SOM Calculator
Enter your market size assumptions and instantly calculate TAM, SAM, and SOM — the three market sizing metrics investors and product teams rely on. The calculator breaks down each tier in dollar terms, estimates customer counts at each level using your average revenue per customer, and shows the market penetration required to hit your SOM target. Use these figures to frame your go-to-market strategy and sharpen your pitch.
How to use
- Set the Total Addressable Market size in dollars, your serviceable percentage of TAM, and your obtainable percentage of SAM.
- Enter the average annual revenue per customer for your pricing model.
- Review the TAM, SAM, and SOM figures along with estimated customer counts and penetration rates.
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Frequently Asked Questions
FAQs about TAM SAM SOM Calculator
What is TAM SAM SOM?
TAM (Total Addressable Market) is the total revenue opportunity if you captured 100% of the market. SAM (Serviceable Addressable Market) is the portion you can realistically serve given your product and geography. SOM (Serviceable Obtainable Market) is the slice of SAM you can win in the near term.
How should I estimate the serviceable percentage?
Consider constraints like geography, language, pricing tier, and the specific problem your product solves. A B2B SaaS targeting mid-market US companies might serve 10–20% of a global TAM.
What is a realistic SOM target?
Early-stage companies typically target 1–5% of SAM for their initial market capture. A credible SOM is backed by your sales capacity, marketing budget, and competitive differentiation.
Why does average revenue per customer matter?
ARPU converts the dollar market size into an estimated customer count, which helps you understand sales targets and unit economics at each market tier.
Should TAM SAM SOM be annual figures?
Yes, market sizes are conventionally expressed as annual revenue opportunity. Make sure your average revenue per customer figure is also on an annual basis for consistent results.