TAM SAM SOM Calculator
TAM SAM SOM Calculator
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Estimate your market opportunity with top-down or bottom-up inputs. Get clear TAM, SAM, and SOM results for planning, fundraising, and validation.
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Estimate Market Size With ConfidenceUse Thunderbit to scrape market data from websites, PDFs, docs, and images, then organize it into structured tables for fast analysis and planning.
Install fromChrome Web Store
Estimate Market Size With Confidence
Scrape websites, subpages, PDFs, docs, and images to collect structured market information for TAM, SAM, and SOM analysis. Thunderbit can also summarize, categorize, and format extracted data so your research is easier to review.
Export your results to Google Sheets, Airtable, or Notion with a free export workflow. Use AI Suggest Fields, pagination scraping, and subpage scraping to build clean datasets for planning, fundraising, and competitive research.
How to Calculate Market Size Using Thunderbit
STEP 1Download and InstallDownload and install the Thunderbit Chrome Extension from the Thunderbit Chrome Extension Download Page at https://chromewebstore.google.com/detail/thunderbit-ai-web-scraper/hbkblmodhbmcakopmmfbaopfckopccgp. Once installed, log in or create a free account to get started.
STEP 2Open ExtensionOpen the website or page where the TAM SAM SOM calculator is available. In the Thunderbit Chrome Extension, select the Calculate TAM SAM SOM tab. Choose a calculation method, then enter the assumptions required for your model, such as total industry revenue or number of potential customers, average annual revenue per customer, relevant segment percentage, serviceable segment percentage, expected market share, annual growth rate, and time horizon in years.
STEP 3Click the Calculate Market Size ButtonClick the Calculate Market Size button. Thunderbit will process your inputs and return a structured result with TAM, SAM, and SOM, along with the formulas and any year by year projections. Review the output, then export or copy the table into Excel, Google Sheets, Airtable, or Notion as needed.
Learn how to calculate TAM, SAM, and SOM
Estimate Market Size
The TAM SAM SOM calculator helps you quantify your market opportunity using a top-down or bottom-up method. Enter key assumptions such as industry revenue, customer count, average revenue per customer, and segment percentages to produce a clear market sizing estimate. It is useful for founders, product teams, and investors who need a fast, structured way to evaluate demand and compare opportunities.
Project Growth Over Time
You can also model how your market changes across a chosen time horizon with an annual growth rate. The calculator shows TAM, SAM, and SOM projections year by year, making it easier to test scenarios and understand how market share may evolve. This supports strategic planning, fundraising narratives, and more grounded decisions based on explicit assumptions.
Break Down Each Calculation
The output includes TAM, SAM, and SOM values with the formulas used to derive each metric. That makes it easier to explain your assumptions to stakeholders and defend your numbers in pitch decks or planning documents. Instead of guessing, you get a transparent breakdown that can be reviewed, adjusted, and reused as your model changes.
Use Results for Planning
The calculator is designed for market validation, fundraising, and strategic planning. Founders can size early opportunities, product teams can prioritize segments, and investors can assess whether a market is large enough to support growth. By turning assumptions into a structured market model, it helps teams align on a realistic view of opportunity.
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What users say about Thunderbit
Taryn W.Growth Strategist@Thunderbit changed how I run competitor research. I click 'AI Suggest Fields,' and it builds a clean table across paginated results—no coding, no CSS. Huge time-saver when analyzing product data from long-tail marketplaces.
Miles T.Sales Development ConsultantI use Thunderbit to grab emails and phone numbers from directories. It extracts clean contact info in one click, and exporting to Sheets or Notion takes seconds. No extra setup, no coding—just usable data ready to work with.
Rhea C.E-commerce AnalystThunderbit helps me monitor SKU data across multiple pages. I scrape the listings, then use Subpage Scraping to pull full product specs, pricing, reviews, and stock. The AI organizes everything into columns I define.
Cassian B.Real Estate AdvisorThunderbit's Scheduled Scraper makes real estate tracking easier. I describe the interval in plain English, and it automatically pulls updated listings, prices, and links without touching the setup again. Simple and very practical.
Dorian B.Content & SEO SpecialistI use Thunderbit's Field AI Prompts to clean and tag scraped blog content. It extracts titles, authors, and even suggests categories. Works great across dynamic sites and subpages—perfect for building structured SEO datasets.
Lina K.Marketplace Operations LeadWe track SKUs from niche stores using Thunderbit. Cloud Scraping handles 50 pages at a time, and for login-required sites, we switch to browser mode. It’s fast, flexible, and doesn’t need ongoing maintenance or manual edits.
Jorge F.Inbound Sales ManagerThunderbit’s AI Autofill is a lifesaver. After scraping contact info, I use it to fill lead forms directly in my browser. I just select the tab, and it fills everything using the scraped row. No manual input needed.
Alina D.Freelance ResearcherI rely on Thunderbit for extracting data from PDFs, image-based sites, and infinite scroll pages. It handles messy formats with AI and delivers ready-to-export tables I can send to Google Sheets or Airtable in seconds.
Taryn W.Growth Strategist@Thunderbit changed how I run competitor research. I click 'AI Suggest Fields,' and it builds a clean table across paginated results—no coding, no CSS. Huge time-saver when analyzing product data from long-tail marketplaces.
Miles T.Sales Development ConsultantI use Thunderbit to grab emails and phone numbers from directories. It extracts clean contact info in one click, and exporting to Sheets or Notion takes seconds. No extra setup, no coding—just usable data ready to work with.
Rhea C.E-commerce AnalystThunderbit helps me monitor SKU data across multiple pages. I scrape the listings, then use Subpage Scraping to pull full product specs, pricing, reviews, and stock. The AI organizes everything into columns I define.
Cassian B.Real Estate AdvisorThunderbit's Scheduled Scraper makes real estate tracking easier. I describe the interval in plain English, and it automatically pulls updated listings, prices, and links without touching the setup again. Simple and very practical.
Dorian B.Content & SEO SpecialistI use Thunderbit's Field AI Prompts to clean and tag scraped blog content. It extracts titles, authors, and even suggests categories. Works great across dynamic sites and subpages—perfect for building structured SEO datasets.
Lina K.Marketplace Operations LeadWe track SKUs from niche stores using Thunderbit. Cloud Scraping handles 50 pages at a time, and for login-required sites, we switch to browser mode. It’s fast, flexible, and doesn’t need ongoing maintenance or manual edits.
Jorge F.Inbound Sales ManagerThunderbit’s AI Autofill is a lifesaver. After scraping contact info, I use it to fill lead forms directly in my browser. I just select the tab, and it fills everything using the scraped row. No manual input needed.
Alina D.Freelance ResearcherI rely on Thunderbit for extracting data from PDFs, image-based sites, and infinite scroll pages. It handles messy formats with AI and delivers ready-to-export tables I can send to Google Sheets or Airtable in seconds.
Frequently Asked Questions
Extract Data using AI
Easily transfer data to Google Sheets, Airtable, or Notion
Chrome Store Rating
PRODUCT HUNT#1 Product of the Week