market-sizing

Estimate market size using TAM, SAM, and SOM methodologies.

25.0k|2.7k|Updated Mar 1, 2026
One-click install
npx skills add https://github.com/phuryn/pm-skills --skill market-sizing-phuryn
Or copy as Structured Prompt for Agent
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Skill: market-sizing
Source: https://github.com/phuryn/pm-skills/tree/main/pm-market-research/skills/market-sizing
Command: npx skills add https://github.com/phuryn/pm-skills --skill market-sizing-phuryn

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill helps estimate the Total Addressable Market (TAM), Serviceable Addressable Market (SAM), and Serviceable Obtainable Market (SOM) for a product or opportunity.

Core Features & Use Cases

  • Market Definition: Clearly defines the boundaries of the market being analyzed.
  • Top-Down & Bottom-Up Estimation: Employs both methodologies for robust market sizing.
  • Growth Projection: Forecasts market evolution over 2-3 years.
  • Assumption Mapping: Identifies and surfaces critical assumptions and risks.
  • Use Case: When evaluating a new market entry, use this Skill to quantify the potential revenue opportunity and understand the realistic market share achievable.

Quick Start

Estimate the market size for a new AI-powered project management tool targeting small to medium-sized businesses in North America.

Frequently Asked Questions about market-sizing

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I estimate TAM, SAM, and SOM for a new market entry?

To estimate TAM, SAM, and SOM, define market boundaries and apply both top-down and bottom-up methodologies. This quantifies total market opportunity, the serviceable addressable portion, and realistic obtainable market share.

What is the difference between top-down and bottom-up market sizing?

Top-down market sizing estimates opportunity from broad industry revenue down to a target segment, while bottom-up calculates potential based on unit pricing and customer volume. Using both validates market opportunity accuracy.

How do I project market growth for an investor pitch?

Project market growth by forecasting market evolution over a 2-3 year period. This growth projection identifies critical assumptions and risks, providing quantitative backing for investor pitch preparation.

Can I evaluate market opportunity without prior industry data?

Evaluating market opportunity relies on mapping critical assumptions and risks. Without direct industry data, you can still scope market entry by defining boundaries and estimating serviceable portions using bottom-up logic.

What's the best way to define market boundaries for sizing?

The best way to define market boundaries for sizing is to clearly articulate the product scope and target audience first. This ensures the serviceable addressable market reflects a realistic capture scenario.