Hat Size Calculator

Calculate Hat Size

Formula

To calculate the hat size (\(HS\)):

\[ HS = \frac{H}{\pi} \]

Where:

What is a Hat Size?

A hat size is a measurement used to determine the appropriate size of a hat for an individual. It is typically calculated by measuring the circumference of a person’s head at the widest point, usually about an inch above the ears and across the mid-forehead. This measurement, usually given in inches or centimeters, corresponds to specific sizes (small, medium, large, etc.) or numerical hat sizes, depending on the country and the hat manufacturer.

Example Calculation 1

Let's assume the following values:

Using the formula:

\[ HS = \frac{22}{3.14159} = 7.00 \]

The hat size is 7.00.

Example Calculation 2

Let's assume the following values:

Using the formula:

\[ HS = \frac{24}{3.14159} = 7.64 \]

The hat size is 7.64.