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Competitive

Market Sizing Calculator

Calculate TAM/SAM/SOM using both top-down and bottom-up approaches with clear assumption tracking.

/market-sizing

Time Saved

6-10 hrs → 1 hr

Compared to doing it manually

Slash Command

/market-sizing

Type this in Claude to run the skill

The Problem

TAM/SAM/SOM numbers are often pulled from thin air or copied from analyst reports without validation. Investors and execs see through weak market sizing instantly.

What You Get

  • ✓Dual methodology (top-down + bottom-up)
  • ✓Triangulated estimates with confidence levels
  • ✓Assumption log with sources
  • ✓Sensitivity analysis
  • ✓Risk factors documented
  • ✓Investor-ready format
Want this automated?

This skill runs inside a workflow

Agent workflows chain multiple skills into one command.

Market Sizing Analyzer

Agent workflow

TAM/SAM/SOM in 45 minutes.

2 skills automated
4 hrs → 45 min

How to use this skill

  1. 1Download the skill file using the button on this page
  2. 2Add the file to your .claude/skills/ folder in your project
  3. 3Type /market-sizing in Claude to run the skill

Best For

Business casesInvestor pitchesNew market entryProduct expansion

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Frequently Asked Questions

TAM (Total Addressable Market) = everyone who could use your product. SAM (Serviceable Addressable Market) = the portion you can reach. SOM (Serviceable Obtainable Market) = the portion you can realistically capture.

Two approaches: top-down (start with industry data, narrow down) or bottom-up (count potential customers × price). Bottom-up is usually more accurate. Triangulate with both methods.

View Workflow →