Hat Size Guides by Brand
How to read each brand’s own hat size chart and pick a size, with the source page and the date we checked it for every number.
- Nike Fitted Hat Size Chart: Head Size in CM and Inches
Nike hat size chart in cm and inches, how Nike says to measure, one-size ranges, and what the chart leaves out.
Published 2026-11-03
- Flexfit Hat Size Chart: Published Ranges by Size Label
Flexfit size ranges as published by retailers, with the unit, the stretch given, and what to check against your own head measurement.
Published 2026-10-22
- Hat Size Chart New Era: 59FIFTY and 39THIRTY Sizes
New Era hat size chart for 59FIFTY fitted and 39THIRTY stretch caps, with inch and cm values from the brand and how to measure.
Published 2026-10-20