Hat Size Measurement Calculator

Hat Size Measurement Calculator calculator can be used to determine your hat size based on your head circumference.

Input Parameters

Calculation Results

Hat Size

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Calculation Formula

Hat Size = round((Head Circumference / 2.54) / 2.54) + 32

Where:
Head Circumference: Your head circumference in centimeters.
2.54: Conversion factor from centimeters to inches.
32: Base size adjustment for hat sizing in the US.

Hat Size Measurement Calculator Calculator Usage Guide

Learn how to use the Hat Size Measurement Calculator calculator and its working principles

How to Use the Calculator

  1. Enter your head circumference in centimeters in the input field.
  2. Click the "Calculate" button to determine your hat size.
  3. Your hat size will be displayed in the results area.

Understanding the Formula

The calculator uses the following formula to determine your hat size:

Hat Size = round((Head Circumference / 2.54) / 2.54) + 32

This formula converts your head circumference from centimeters to inches, adjusts for standard hat sizing, and rounds to the nearest whole number.

Example

If your head circumference is 56 cm:

  1. Convert to inches: 56 cm / 2.54 = 22.05 inches
  2. Adjust for hat sizing: 22.05 / 2.54 = 8.66
  3. Add base size: 8.66 + 32 = 40.66
  4. Round to nearest whole number: 41

So, your hat size would be 41.