How do hat sizes work? Use our simple guide to ensure that you find the ideal hat size, with just a measuring tape.

1. Place a tape measure around your head mid-forehead and a finger’s width above the ears. Make sure it is positioned at the widest part of your head.

2. Take note of the measurement.

3. Using our hat sizing chart, choose your hat size.

Hat Sizing Chart

Having followed our hat measurement guide you are all set to compare your measurement with the hat sizing chart below to work out what size hat you need. Or if you know your hat size in American hats, or in European measurements, find your British size here. Hat sizing is the key to a perfect fit and being able to wear the hat you love with confidence.