market-sizing

Estimate TAM, SAM, and SOM with top-down and bottom-up approaches.

5|2|Updated Mar 27, 2026
One-click install
npx skills add https://github.com/tarunccet/pm-skills --skill market-sizing-tarunccet
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: market-sizing
Source: https://github.com/tarunccet/pm-skills/tree/main/pm-market-research/skills/market-sizing
Command: npx skills add https://github.com/tarunccet/pm-skills --skill market-sizing-tarunccet

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Estimate market size and opportunity using TAM, SAM, and SOM with both top-down and bottom-up methods, enabling data-driven go-to-market decisions.

Core Features & Use Cases

  • Top-down market sizing to frame opportunity.
  • Bottom-up validation from unit economics and pricing.
  • SAM/SOM scoping for realistic market reach in 1-3 years.

Quick Start

Analyze a given market opportunity and produce TAM, SAM, and SOM with growth projections.

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 specific market segment?▼

Estimate TAM, SAM, and SOM by applying both top-down and bottom-up approaches to your geography, industry, and customer segments. This reconciles broad market opportunity with unit economics to produce data-backed market definitions and growth projections.

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

Top-down market sizing frames the total opportunity from industry-level data, while bottom-up sizing validates it from unit economics and pricing. Combining both methods reconciles market estimates and produces structured assumptions for realistic SAM and SOM scoping.

How do I scope SOM for realistic market reach in the first few years?▼

Scope SOM by analyzing your serviceable market and applying growth projections based on data-backed assumptions. This focuses on realistic market reach within 1-3 years by constraining the SAM through bottom-up unit economics and specific customer segments.

Can I generate growth projections and risk analysis from a bottom-up market sizing approach?▼

Yes, bottom-up market sizing generates growth projections alongside a structured set of key assumptions and risks. By validating unit economics and pricing against the target industry, it delivers data-backed forecasts and highlights potential market constraints.

When should I use a combined top-down and bottom-up approach for market opportunity analysis?▼

Use a combined approach for market opportunity analysis when making data-driven go-to-market decisions. Reconciling top-down industry views with bottom-up unit economics prevents overestimation and grounds your TAM, SAM, and SOM in actionable growth projections.

What inputs do I need to calculate TAM, SAM, and SOM accurately?▼

To calculate TAM, SAM, and SOM accurately, provide the target geography, industry, and customer segments. These inputs allow the sizing analysis to apply top-down and bottom-up methods, yielding reconciled market definitions and structured assumptions.