01.4.6 · Skill in Market research
Market sizing
Estimating how many potential customers exist and what they could be worth.
Market sizing estimates the reachable audience, often bottom-up from real numbers of customers and prices. It is rough by nature, but it tells you whether an idea can support a business or only a hobby. Bottom-up estimates are more honest than top-down ones.
Resources
2- articleStart hereTAM, SAM, and SOM: how to size your market ↗Stripe · 2026 · 15 min
Clear definitions of the three numbers and the common mistakes, such as a market defined far too broadly.
- articleGo deeperBottom-up market sizing: what it is and how to do it ↗Visible.vc · 2025 · 12 min
Builds a market estimate from real customer counts and prices, the version investors find easiest to trust.
Tools
none yetTools for this topic are being researched.