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Hat Size Converter
US · UK · EU · Centimeters · Inches — for caps, fedoras, beanies, and all headwear
Converted Hat Size
57
EU
US 7 = EU 57
📏 How to Measure Your Head
📎 Use a soft measuring tape
🔄 Wrap around your head 1cm above ears
📏 Keep tape level and snug, not tight
📝 Measure 2-3 times for accuracy
📊 Hat Size Conversion Chart
US SizeUK SizeEU SizecminchesAlpha
6 ⅜6 ⅜515120.1XS
6 ½6 ½525220.5XS
6 ⅝6 ⅝535320.9S
6 ¾6 ¾545421.3S
6 ⅞6 ⅞555521.7M
77565622.0M
7 ⅛7 ⅛575722.4L
7 ¼7 ¼585822.8L
7 ⅜7 ⅜595923.2XL
7 ½7 ½606023.6XL
7 ⅝7 ⅝616124.0XXL
7 ¾7 ¾626224.4XXL
7 ⅞7 ⅞636324.8XXXL
88646425.2XXXL
👶 Average Hat Sizes by Age
Newborn13-14" / 33-36 cmUS 5 ½ - 6
6-12 months14-16" / 36-41 cmUS 6 - 6 ½
1-3 years16-18" / 41-46 cmUS 6 ½ - 7
4-10 years18-20" / 46-51 cmUS 7 - 7 ¼
Teen/Adult S20-21" / 51-53 cmUS 6 ¾ - 6 ⅞
Adult M21-22" / 53-56 cmUS 7 - 7 ⅛
Adult L22-23" / 56-58 cmUS 7 ¼ - 7 ⅜
Adult XL23-24" / 58-61 cmUS 7 ½ - 7 ⅝
💡 Hat Fitting Tips
🧢 Baseball caps: Measure 1cm above eyebrows
🎩 Fedoras: Should sit 1-2cm above ears
🧣 Beanies: Stretchy, size down if between sizes
🌡️ Hot weather = measure slightly larger
🧢 5 sizing systems
📏 US, UK, EU, cm, inches
👶 Children & adult sizes
📊 Full conversion chart