Size breakdown
7 3/8 hat size in cm and inches
US 7 3/8 is an eighth-size fitted label: 23 1/8 inches of head circumference, or 58.7 cm in metric.
US fitted
7 3/8
circumference 23 1/8 in ÷ π
Head circumference
58.7 cm
= 23 1/8
UK size
7 1/4
= US minus 1/8
EU size
59
= cm rounded
Letter size: about L. L.A head measured up to 0.3 cm from 58.7 cm matches this size; between sizes, take the next size up for a non-adjustable hat.Letter sizes vary by brand; check the brand's own chart.
Where 7 3/8 sits on the hat sizes chart
This size and its neighbours, so you can compare at a glance:
| US | UK | Head (cm) | Head (inches) | EU | Letter |
|---|---|---|---|---|---|
| 7 1/4 hat size | 7 1/8 | 57.7 | 22 3/4 | 58 | L |
| 7 3/8 hat size | 7 1/4 | 58.7 | 23 1/8 | 59 | L |
| 7 1/2 hat size | 7 3/8 | 59.6 | 23 1/2 | 60 | XL |
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