Market Size Calculator
Size it top-down from a population, or bottom-up from outlets. Both show the assumption chain and a sanity check.
%
%
Purchases per buyer per year
$
$99B
Estimated annual market size
Assumption chain
- Population220M
- Eligible (60%)132M
- Buyers (100%)132M
- Purchases (150x/yr)19.8B
- Revenue (x $5)$99B
Sanity check
- Share of United States GDP
- 0.367%
- Spend per person per year
- $296
Plausible order of magnitude. State the check in the interview, because it signals judgment.
The calculator does the arithmetic; the interview scores the assumptions. That part is in the course and the firm simulators.