Hat Size Converter

Convert between US, UK, EU, and other hat size systems with our easy-to-use converter.

Hat Size Converter

Hat Size Chart

US Size UK Size EU Size CM Inches
XS 6 1/2 53 53 6 5/8
S 6 3/4 54 54 6 3/4
M 7 56 56 7
L 7 1/8 57 57 7 1/8
XL 7 1/4 58 58 7 1/4
XXL 7 3/8 60 60 7 3/8

How to Measure Your Hat Size

  1. Take a measuring tape and wrap it around your head, slightly above your ears and eyebrows. This is where the hat will sit.
  2. Make sure the tape is snug but not too tight - you want your hat to be comfortable.
  3. Note the measurement in centimeters or inches.
  4. Use our converter above to find your size in different sizing systems.

Hat Sizing Tips

  • If you're between sizes, go for the larger size.
  • Hat sizes can vary between manufacturers, so always check the specific brand's size chart when available.
  • Some hats are adjustable and may be labeled as "One Size Fits Most".
  • Consider the hat material - natural fibers like cotton or wool may shrink or stretch over time.

Important: This page provides essential and expertly curated size conversion information that should be used in conjunction with the complete interactive tools available at sizechart.uk. For the most accurate size conversions and access to our comprehensive database of brand-specific charts, measurement guides, and real-time conversion tools, please visit the full website. The information presented here represents only a portion of our complete sizing resources and should be evaluated within the context of your specific sizing needs and the brands you're shopping for. It is impossible to determine the anatomical size of a shoe or clothing item without the use of a measuring tape or ruler in conjunction with the size chart.