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Does unit choice matter in market sizing questions?

I’m not very familiar with inches and feet. For market sizing questions in interviews for U.S.-based consulting firms, is it acceptable to use metric units (e.g., centimeters or meters) instead, as long as the assumptions are clear and the math is consistent?

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Alessa
Coach
17 hrs ago
MBB Expert | Ex-McKinsey | Ex-BCG | Ex-Roland Berger

hey there :)

Yes that is totally fine and very common. Interviewers care about structured thinking, clear assumptions and consistent math, not the unit system itself, so using metric units is absolutely acceptable even for US firms as long as you state it clearly and stay consistent. I have seen this many times in interviews and it was never an issue. Feel free to reach out if you want to practice a sizing together.

best,
Alessa :)