tam-sam-som-calculator

Calculate TAM, SAM, and SOM market sizes through guided questions.

1|Updated Mar 3, 2026

Search Tags:#product strategy #market sizing #sam #som #tam #business validation

Ready to run

npx skills add https://github.com/Johnnnmai/100x-product-manager --skill tam-sam-som-calculator-johnnnmai

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: tam-sam-som-calculator
Source: https://github.com/Johnnnmai/100x-product-manager/tree/main/skills/tam-sam-som-calculator
Command: npx skills add https://github.com/Johnnnmai/100x-product-manager --skill tam-sam-som-calculator-johnnnmai

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes scripts (resource) and references (resource) components.

What problem does it solve?

This Skill helps product managers and founders accurately estimate the Total Addressable Market (TAM), Serviceable Available Market (SAM), and Serviceable Obtainable Market (SOM) for their product ideas, providing a data-backed foundation for business strategy and investor pitches.

Core Features & Use Cases

Guided Market Sizing: Asks adaptive, contextual questions to gather necessary inputs.
Data-Driven Estimates: Leverages real-world data sources and projections for credible market size calculations.
Use Case: A founder is developing a new B2B SaaS tool for remote teams. They use this Skill to determine the market size for their specific niche, informing their go-to-market strategy and investor deck.

Quick Start

Use the tam-sam-som-calculator skill to guide me through calculating the market size for a new B2B SaaS productivity tool targeting small businesses in the US.

Frequently Asked Questions about tam-sam-som-calculator

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

FAQPage Schema

How do I calculate TAM, SAM, and SOM for a new B2B SaaS product?▼

Calculate TAM, SAM, and SOM by defining your problem space, geographic region, and industry segments. This Skill guides you through adaptive questions to gather these inputs and builds defensible market size estimates using real-world data.

What is the best way to estimate market size using real-world data for an investor pitch?▼

Estimate market size for investor pitches by leveraging real-world citations and economic projections. This approach provides a data-backed foundation for your business strategy, ensuring your TAM, SAM, and SOM calculations are credible and defensible.

How do you determine the Serviceable Obtainable Market for a specific industry segment?▼

Determine the Serviceable Obtainable Market by analyzing your potential customers within a specific industry segment. The calculation process uses contextual questions and economic projections to estimate the realistic market share you can capture.

Can I use this market sizing approach for a niche product idea targeting a specific geographic region?▼

Yes, you can size a niche product market by providing inputs on your specific geographic region and target audience. The Skill asks adaptive questions tailored to your context to calculate accurate market estimates for specialized product ideas.

Does calculating Total Addressable Market require predefined data sources or economic projections?▼

Calculating the Total Addressable Market utilizes built-in real-world data sources and economic projections. You do not need to bring predefined datasets; the Skill incorporates these references automatically to build credible market size estimates.

Why should I use a guided market sizing process instead of estimating business validation metrics manually?▼

A guided market sizing process prevents estimation errors by asking contextual questions about your problem space and potential customers. This structured approach yields data-driven estimates that are more defensible than manual business validation calculations.