Hat Sizing and How to Measure your Head


Hat Sizing

An average head size for men is size 7 38 (using U.S. sizing), 58 cm (using European sizing) or
7 18 (using UK sizing). The average head size for women is 7 14 (U.S. sizing). Of course, head sizes and shapes can also differ from country to country.

How to measure your head

Take a measuring tape and place it around the circumference of the head, slightly above the ears.

Hat Measuring Chart

US 58 34 78 7 18 14 38 12 58 34 78 8
UK 12 58 34 78 7 18 14 38 12 58 34 78
CM 53 54 55 56 57 58 59 60 61 62 63 64
Inches 20 34 21 14 21 58 22 22 12 22 34 23 14 23 58 24 24 12 24 34 25 14


About Bullard
Founded in 1898, Bullard is a leading manufacturer of high-quality personal protective equipment and systems that are designed and manufactured in the USA and marketed worldwide.

History of the Hard Hat
When were the first hard hats manufactured? Learn more about how the Bullard family invented the hard hat here.

Head Protection
From the company that invented the hard hat, find a comprehensive selection of head protection.