Size Studio
US 7 7/8 Hat Size in cm, UK and Letter Size
A US 7 7/8 fitted hat is for a head of 63 cm (24.6 in) around. It is a UK 7 3/4 and usually XXL in letter sizes.
| Head (cm) | Head (in) | US | UK | Letter |
|---|---|---|---|---|
| 63 | 24.6 | 7 7/8 | 7 3/4 | XXL |
Good to know
- US fitted sizes are the head circumference in inches divided by π, in eighths. UK sizes run one eighth below US for the same head. EU sizes are the head in centimetres.
- Measure around your head just above the ears and eyebrows. Between sizes, choose the larger one.
Sizes either side
Smaller: 7 3/4Larger: 8Open the full converterHow to measure yourself
Questions
What is a 63 cm head in US hat size?
US 7 7/8.
What size is a 7 7/8 hat in letters?
Usually XXL, but letter sizes vary by maker.
What is US 7 7/8 in UK hat size?
UK 7 3/4.
Shop Hats
More size tools
All tools- Shoe Size ConverterUS, UK, EU and cm for men and women, including men-to-women.
- Watch Size for Wrist CalculatorCase diameter, lug-to-lug and strap length for your wrist.
- Hat Size Chart & CalculatorHead measurement to US, UK, EU and S–XXL fedora sizes.
- Ring Size Converter & Printable SizerUS numbers, UK letters, EU, Japan and mm, plus a print-at-home sizer.
- Dress Size ConverterWomen's UK, US, EU, French, Italian, Australian and Japanese sizes.
- Jeans & Trousers Size ConverterWaist sizes to US, UK and EU for men and women.
- Belt Size CalculatorTrouser waist to belt size in inches and centimetres.
- Men's Shirt Size Chart (Neck & Sleeve)Neck size in inches and cm, S–XXL, and what 16/34 means.
- Backpack Size Guide (Litres)Dimensions to litres, and the right size for your trip.
- Men's Clothing Size ConverterSuits, jackets and T-shirts: UK, US, EU and chest sizes.