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EDUCATIONAL TOOL · LOCAL CALCULATION

Turn market assumptions
into a visible scenario

Estimate a defined market from buyer units and annual value, then separate the broader addressable category from the initial segment. Your entries are calculated in this browser and are not submitted.

No sign-inNo data submissionScenario only · Not a forecast

MARKET SIZING WORKSHEET

Define the market
before choosing the number

Use your own assumptions. Enter annual values in one currency, and document the source and date for each input outside this calculator.

Illustrative scenario

Outputs depend on your inputs. They are not measured market data, a revenue forecast, valuation or investment recommendation.

1 · Addressable category
2 · Initial segment
%
%

How this calculator works

Category = potential buyers × annual purchase units per buyer × annual value per unit. Initial segment = category × segment share. Reachable planning case = initial segment × reach share. It does not calculate company valuation or forecast a venture’s revenue.

Source and limits

This is an original arithmetic worksheet, not market research. The SBA recommends defining a target market and analyzing competition by product and market segment. Use primary market evidence, record data dates and avoid false precision.

U.S. Small Business Administration — Plan your business

Keep building from evidence

Open the Venture Tools Lab TAM glossary definition Read the market-sizing answer Explore the Venture Model Return to Knowledge Hub