All Fermi answers
Fermi #4 · Question 2

How many dimples are on a regulation golf ball?

Explore the official answer and the simple reasoning behind this Fermi estimate.

2QUESTION 2 OF 3

Answer & explanation

The official answer, with Fermi’s reasoning step by step.

Answer & explanation

Official answer

336

dimples

Source calculation & reference
Range across approved balls
300–500
Most common production count
= 336
Standard (Titleist Pro V1, etc.)
= 336

Reference cited by Fermi: USGA equipment rules · Titleist/Callaway specs

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