TAM = population × price
Total Addressable Market multiplies your full buyer population by the annual price per buyer — the ceiling if you captured everyone.
Free MVP market-sizing calculator
TAM-SAM-SOM Calculator
Calculate your total, serviceable, and obtainable market size from explicit population, price, and share inputs.
- Calculated instantly from your inputs
- No signup or data submission
- A focused next step for MVP planning
Your entries remain in this browser session and are not sent to MVPHub.
Your inputs
Turn your assumptions into TAM, SAM, and SOM
Enter your total buyer population, annual price per buyer, and the serviceable and obtainable share percentages.
Your calculated result
Your result
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Planning score
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How it works
SAM narrows by reach
Serviceable Addressable Market applies your serviceable-share percentage to TAM, reflecting channel, geography, and pricing-tier limits.
SOM narrows by capture rate
Serviceable Obtainable Market applies your obtainable-share percentage to SAM, reflecting realistic year-one sales capacity.
Realism check
The tool flags when SOM as a percentage of TAM falls outside the 0.1%–2% range typical of credible MVP-stage estimates.
Frequently asked questions
What is the difference between TAM, SAM, and SOM?
TAM is the total market if you captured every possible buyer. SAM is the portion you could realistically serve given your business model. SOM is the portion you can realistically capture in the near term given competition and capacity.
Why must SOM be a percentage of SAM, not TAM?
SOM is always a subset of SAM — you can only obtain market share within the market you can actually serve, not the entire theoretical total.
What is a realistic SOM percentage of TAM?
For an early-stage MVP, a SOM between 0.1% and 2% of TAM is typically considered credible. Figures far above that usually indicate an overly optimistic SAM or SOM assumption.
Where do I get the total buyer population number?
Use government census or statistics data, industry association reports, or a bottom-up calculation from known unit counts (e.g. number of businesses of a given type and size).
Does this tool factor in growth over time?
No — this calculates a snapshot at the price and population you enter. Rerun it with updated figures as your market or pricing changes.
Can I use this for a B2B or B2C product?
Yes — set the buyer population and price per buyer to match your actual unit: companies for B2B, households or individuals for B2C.
How we compare
| Capability | MVPHub | Excel/Google Sheets model | Generic AI chat assistant |
|---|---|---|---|
| Instant TAM/SAM/SOM arithmetic from inputs | ✓ | ✓ | — |
| Built-in SOM-realism check against TAM | ✓ | × | × |
| No spreadsheet setup or formula-writing required | ✓ | × | ✓ |
| Free, no signup required | ✓ | ✓ | — |
MVPHub performs the standard TAM→SAM→SOM funnel calculation instantly with a built-in realism check. A spreadsheet model offers similar flexibility but requires manual formula setup; a general AI assistant can estimate similar figures but without consistent, transparent arithmetic.