Generate market size and TAM analysis
AI researches your industry and writes a professional paragraph with TAM, SAM, and SOM breakdown.
Generate market size and TAM analysis
River's Market Size and TAM Generator creates professional market analysis paragraphs that investors and stakeholders expect. You tell the AI about your market and target customer, it researches industry data, then writes a clear paragraph covering Total Addressable Market (TAM), Serviceable Addressable Market (SAM), and Serviceable Obtainable Market (SOM) with credible numbers and sources. Perfect for pitch decks, business plans, and investor materials that need to show market opportunity size.
Unlike guessing at market size or spending hours researching industry reports, this AI finds relevant market data and structures it using the TAM/SAM/SOM framework investors understand. It explains what each number represents, cites credible sources, and shows the logical path from total market to your realistic target market. The paragraph demonstrates you understand market opportunity without overselling. Investors spot inflated market sizes instantly. This provides grounded, defensible numbers.
This tool is perfect for founders building pitch decks and needing market sizing, entrepreneurs writing business plans that require market analysis, product managers justifying new initiatives, or anyone who needs to quantify market opportunity. If you're not sure how to calculate TAM/SAM/SOM or where to find credible market data, this creates the professional market analysis paragraph you need. Use it when you need to show investors or stakeholders that the market is large enough to matter.
How to Think About Market Sizing
Market sizing shows investors the opportunity scale. TAM (Total Addressable Market) is everyone who could theoretically use your solution if you had 100% market share and no constraints. SAM (Serviceable Addressable Market) is the portion of TAM you can reach with your current business model and go-to-market approach. SOM (Serviceable Obtainable Market) is what you can realistically capture in the near term given competition and resources. For example, if you're building accounting software: TAM might be all small businesses globally, SAM is small businesses in your geography using cloud software, SOM is the 2-3% you can win in first few years.
Credible market sizing uses real industry data, not made-up math. Find reports from research firms (Gartner, IDC, Forrester), industry associations, government statistics, or public company data. Avoid inflated numbers from paid market research sites. Investors check sources. Better to show smaller credible market than huge unbelievable one. Bottom-up sizing (count potential customers times average revenue) is often more credible than top-down (taking percentage of huge market). Show your logic so investors can stress-test assumptions.
The market sizing paragraph should tell a story: here's the total market, here's the part we can address with our solution, here's what we can realistically capture. Numbers should get progressively smaller (TAM > SAM > SOM) showing you're realistic. If your SOM is still large (hundreds of millions or billions), that's great. Investors want big opportunities, but they also want founders who understand the path from zero to meaningful market share. Show ambition tempered with realism.
What You Get
Professional market sizing paragraph with TAM/SAM/SOM
Industry research and credible market data
Clear explanation of each market segment
Source citations for credibility
Realistic sizing that investors will respect
Ready to use in pitch decks or business plans
How It Works
- 1Describe your marketAI asks about your industry, target customer, and geography
- 2AI researches dataFinds credible market size data and industry reports
- 3Generates TAM/SAM/SOMWrites paragraph with market breakdown in 5 minutes
- 4Use in materialsAdd to pitch deck, business plan, or investor materials
Frequently Asked Questions
How accurate are the market size numbers?
The AI uses publicly available market research and industry data to provide reasonable estimates. However, you should verify numbers and update with your own research if you have better data. Market sizing is always somewhat approximate. What matters is using credible sources and logical methodology. Investors understand market sizes are estimates. They're looking for order-of-magnitude accuracy and sound reasoning, not precision to the decimal. Always cite sources so investors can check your logic.
What if my market is very niche or new?
For niche or emerging markets, the AI will either find adjacent market data and explain how yours fits, or help you build bottom-up sizing (number of potential customers times expected revenue per customer). New markets often don't have published TAM numbers. In that case, show your logic clearly: here's the customer segment size, here's what we think adoption will be, here's expected revenue per customer. Bottom-up sizing is often more credible than trying to claim a percentage of a huge existing market anyway.
Can I use this for different geographies?
Yes. Tell the AI what geography you're targeting (U.S., North America, Europe, global, etc.). Market sizes vary significantly by region. A market that's $50B in the U.S. might be $20B in Europe or $100B globally. Be specific about your geography, especially if you're early-stage and focused on one region initially. You can always expand geographic scope as you scale. Investors prefer focused market definitions over vague 'global' claims from day-one startups.
Should my SOM be aggressive or conservative?
Realistic. SOM should represent what you can actually capture in 3-5 years with reasonable execution. Too aggressive (30% market share in year 2) and investors won't believe you. Too conservative (0.1% of a huge market) and they'll question whether the opportunity is worth pursuing. Most credible SOM claims are 1-5% of SAM for early-stage companies. Show you understand capturing market share is hard but the opportunity is meaningful. The goal is ambition grounded in reality.
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