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Market Size Calculator
TAM · SAM · SOM

Stop guessing your market size. Enter your startup idea and get a data-backed TAM/SAM/SOM analysis with methodology in 30 seconds. Show investors real numbers, not made-up estimates.

TAM / SAM / SOMMarket CAGR includedMethodology explainedInvestor-ready output

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Why Market Sizing Matters for Your Startup

Investors won't write a check without understanding your market. But most founders either guess wildly or cite outdated reports.

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Investor-Ready Numbers

Every pitch deck needs TAM/SAM/SOM. Get credible, AI-calculated figures with methodology you can explain in any meeting.

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Focus Your GTM

SAM tells you exactly which segment to target first. Stop spreading thin — go where the reality of your business model can win.

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Avoid the "Too Small" Trap

A $50M TAM won't raise VC money. A $10B TAM with realistic SOM shows investors there's room to build a big company.

Frequently Asked Questions

How is TAM calculated?+
We use a blended top-down (industry research + CAGR data) and bottom-up (unit economics × addressable population) methodology to estimate each market tier.
What's the difference between TAM, SAM, and SOM?+
TAM = total market if 100% captured. SAM = the segment your go-to-market can actually reach. SOM = what you can realistically capture in 3-5 years.
Are these numbers accurate?+
Market sizing is inherently approximate. These numbers serve as directional estimates. For due diligence, verify with industry reports from Gartner, IDC, or CB Insights.
How do I get a full market analysis?+
Founder Verdict's full platform includes detailed market intelligence, competitor benchmarking, and a complete market sizing model as part of the Deep Analysis.

Turn your market data into a full validation report

7 frameworks · Competitor analysis · Revenue forecast · Build/Pivot/Kill verdict