Hats for big heads
Type your head measurement and see which brands publish a size that covers it, and which charts stop short. Every row links to the brand chart it came from.
By Fitness Hats Editorial Team, published October 27, 2026. Brand charts checked October 4, 2026
63.0 cm is 24.80 in. Opens on an example head of 63.0 cm; replace it with yours.
15of 33 charts list a size for this head
| Brand and line | Result | The chart lists | Source |
|---|---|---|---|
| Ciele Athletics GOCap, FSTCap and TRLCap | L/XL | L/XL: 57 to 63 cm | Ciele Athletics chartchecked 2026-10-04 |
| Flexfit Standard stretch-fit | XXL | XXL: 23 1/8 to 25 in, 59 to 64 cm | Flexfit chartchecked 2026-10-04 |
| Flexfit 110 (adjustable) | OSFA | OSFA: 20 3/8 to 24 5/8 in, 52 to 63 cm | Flexfit chartchecked 2026-10-04 |
| Headsweats Large Running Hat | Large | Large: 57 to 63 cm | Headsweats chartchecked 2026-10-04 |
| King & Fifth Adjustable caps | XXL | XXL: 24 to 26 3/4 in, 61 to 68 cm | King & Fifth chartchecked 2026-10-04 |
| King & Fifth The Jack (fitted) | XXL | XXL: 24 7/8 to 26 in, 63 to 66 cm | King & Fifth chartchecked 2026-10-04 |
| Lamood Big Hats Size chart | 7 7/8 | 7 7/8: 24 5/8 to 24 7/8 in, 62.3 to 63.2 cm | Lamood Big Hats chartchecked 2026-10-04 |
| lululemon Hats in S/M and L/XL | L/XL | L/XL: 22.44 to 24 3/8 in, 57 to 64 cm | lululemon chartchecked 2026-10-04 |
| Mammoth Headwear Regular and XXL caps | Regular Size | Regular Size: 24 1/4 to 26 7/8 in, 61.4 to 68.3 cm | Mammoth Headwear chartchecked 2026-10-04 |
| Melin Size guide (all caps) | XL | XL: 23 5/8 to 24 1/2 in, 61 to 63 cm | Melin chartchecked 2026-10-04 |
| New Era 9FIFTY snapback | L/XL | L/XL: 23 7/8 to 25 3/4 in, 60.6 to 65.4 cm | New Era chartchecked 2026-10-04 |
| Nike Adjustable caps | L/XL | L/XL: 22 5/8 to 24 5/8 in, 58 to 63 cm | Nike chartchecked 2026-10-04 |
| Richardson Fitted | 7 7/8 | 7 7/8: 24 5/8 in, 63 cm | Richardson chartchecked 2026-10-04 |
| Richardson Adjustable | XL | XL: 22 3/4 to 24 5/8 in, 58 to 63 cm | Richardson chartchecked 2026-10-04 |
| Under Armour Men's and unisex headwear | XL/XXL | XL/XXL: 23 1/2 to 25 in, 59.7 to 63.5 cm | Under Armour chartchecked 2026-10-04 |
| New Era 59FIFTY fitted | Between 7 7/8 and 8; none lists this head | 7 7/8: 24 5/8 in, 62.5 cm8: 25 in, 63.5 cm | New Era chartchecked 2026-10-04 |
| Under Armour Hat size table | Between 7 7/8 and 8; none lists this head | 7 7/8: 24 5/8 in, 62.5 cm8: 25 in, 63.5 cm | Under Armour chartchecked 2026-10-04 |
| '47 Adjustable caps | Stops short of this head | Largest: OSFA, 22 to 24 in, 56 to 61 cm | '47 chartchecked 2026-10-04 |
| adidas Hats and caps | Stops short of this head | Largest: Adult (L/XL), 23.6 to 24.4 in, 60 to 62 cm | adidas chartchecked 2026-10-04 |
| Arc'teryx Hats and caps | Stops short of this head | Largest: L - XL, 22 3/4 to 23 1/2 in, 58 to 60 cm | Arc'teryx chartchecked 2026-10-04 |
| Boco Gear Hats | Stops short of this head | Largest: XL, 58 to 61 cm | Boco Gear chartchecked 2026-10-04 |
| Flexfit DELTA (stretch-fit) | Stops short of this head | Largest: L/XL, 22 3/8 to 23 7/8 in, 57 to 61 cm | Flexfit chartchecked 2026-10-04 |
| Flexfit 210 (stretch-fit) | Stops short of this head | Largest: L/XL, 22 3/4 to 23 7/8 in, 58 to 61 cm | Flexfit chartchecked 2026-10-04 |
| lululemon Hats in XS to XL | Stops short of this head | Largest: XL, 23 5/8 to 24 3/8 in, 60 to 62 cm | lululemon chartchecked 2026-10-04 |
| New Era 39THIRTY stretch-fit | Stops short of this head | Largest: L/XL, 23 7/8 to 24 5/8 in, 60.6 to 62.5 cm | New Era chartchecked 2026-10-04 |
| New Era 9FORTY adjustable | Stops short of this head | Largest: One Size, 22 to 23 7/8 in, 55.8 to 60.6 cm | New Era chartchecked 2026-10-04 |
| New Era 9TWENTY and Casual Classic | Stops short of this head | Largest: One Size Fits Most, 22 to 23 7/8 in, 55.8 to 60.6 cm | New Era chartchecked 2026-10-04 |
| Nike Swoosh Flex (stretch-fit) | Stops short of this head | Largest: L/XL, 23 to 24 1/4 in, 59 to 62 cm | Nike chartchecked 2026-10-04 |
| On Caps (one size) | Stops short of this head | Largest: ONE SIZE, 21.7 to 23.6 in, 55 to 60 cm | On chartchecked 2026-10-04 |
| On Caps in S/M and L/XL | Stops short of this head | Largest: L/XL, 21.7 to 23.6 in, 55 to 60 cm | On chartchecked 2026-10-04 |
| Patagonia Hats (all styles) | Stops short of this head | Largest: Large/X-Large, 22 3/4 to 24 in | Patagonia chartchecked 2026-10-04 |
| Richardson R-Flex (stretch-fit) | Stops short of this head | Largest: LG-XL, 23 1/8 to 23 7/8 in, 59 to 61 cm | Richardson chartchecked 2026-10-04 |
| Richardson System 5 (PTS75) | Stops short of this head | Largest: XL, 23 7/8 to 24 1/4 in, 61 to 62 cm | Richardson chartchecked 2026-10-04 |
A result means the chart lists a size for that head. It is the brand's label, not a measurement of any hat. Need your number? Print the calibrated head tape. Not sure where the tape goes? See how to measure your head.
How many charts cover your head
Computed from the published charts below: how many list a size that covers each head measurement.
| Head | Charts with a size | Brands |
|---|---|---|
| 60 cm (23.62 in) | 30 of 33 | '47, adidas, Arc'teryx, Boco Gear, Ciele Athletics, Flexfit, Headsweats, King & Fifth, Lamood Big Hats, lululemon, Melin, New Era, Nike, On, Patagonia, Richardson, Under Armour |
| 62 cm (24.41 in) | 20 of 33 | adidas, Ciele Athletics, Flexfit, Headsweats, King & Fifth, Lamood Big Hats, lululemon, Mammoth Headwear, Melin, New Era, Nike, Richardson, Under Armour |
| 64 cm (25.20 in) | 8 of 33 | Flexfit, King & Fifth, Lamood Big Hats, lululemon, Mammoth Headwear, New Era, Richardson |
| 66 cm (25.98 in) | 4 of 33 | King & Fifth, Lamood Big Hats, Mammoth Headwear |
| 68 cm (26.77 in) | 3 of 33 | King & Fifth, Lamood Big Hats, Mammoth Headwear |
How far each chart goes up
Every chart, sorted by the largest head it lists a size for.
| Brand and line | Type | Largest size | Published head size | Source |
|---|---|---|---|---|
| Lamood Big Hats Size chart | fitted | 9 1/4 | 29 to 29 1/4 in, 73.2 to 74.1 cm (74.1 cm) | Lamood Big Hats chartchecked 2026-10-04 |
| Mammoth Headwear Regular and XXL caps | adjustable | XXL Size | 25 to 27 5/8 in, 63.3 to 70.2 cm (70.2 cm) | Mammoth Headwear chartchecked 2026-10-04 |
| King & Fifth Adjustable caps | adjustable | XXL | 24 to 26 3/4 in, 61 to 68 cm (68.0 cm) | King & Fifth chartchecked 2026-10-04 |
| King & Fifth The Jack (fitted) | fitted | XXL | 24 7/8 to 26 in, 63 to 66 cm (66.0 cm) | King & Fifth chartchecked 2026-10-04 |
| New Era 9FIFTY snapback | adjustable | L/XL | 23 7/8 to 25 3/4 in, 60.6 to 65.4 cm (65.4 cm) | New Era chartchecked 2026-10-04 |
| Under Armour Hat size table | fitted | 8 1/4 | 25 3/4 in, 65.4 cm (65.4 cm) | Under Armour chartchecked 2026-10-04 |
| Flexfit Standard stretch-fit | stretch-fit | XXL | 23 1/8 to 25 in, 59 to 64 cm (64.0 cm) | Flexfit chartchecked 2026-10-04 |
| lululemon Hats in S/M and L/XL | adjustable | L/XL | 22.44 to 24 3/8 in, 57 to 64 cm (64.0 cm) | lululemon chartchecked 2026-10-04 |
| Richardson Fitted | fitted | 8 | 25 in, 64 cm (64.0 cm) | Richardson chartchecked 2026-10-04 |
| New Era 59FIFTY fitted | fitted | 8 | 25 in, 63.5 cm (63.5 cm) | New Era chartchecked 2026-10-04 |
| Under Armour Men's and unisex headwear | adjustable | XL/XXL | 23 1/2 to 25 in, 59.7 to 63.5 cm (63.5 cm) | Under Armour chartchecked 2026-10-04 |
| Ciele Athletics GOCap, FSTCap and TRLCap | adjustable | L/XL | 57 to 63 cm (63.0 cm) | Ciele Athletics chartchecked 2026-10-04 |
| Flexfit 110 (adjustable) | one-size | OSFA | 20 3/8 to 24 5/8 in, 52 to 63 cm (63.0 cm) | Flexfit chartchecked 2026-10-04 |
| Headsweats Large Running Hat | adjustable | Large | 57 to 63 cm (63.0 cm) | Headsweats chartchecked 2026-10-04 |
| Melin Size guide (all caps) | adjustable | XL | 23 5/8 to 24 1/2 in, 61 to 63 cm (63.0 cm) | Melin chartchecked 2026-10-04 |
| Nike Adjustable caps | adjustable | L/XL | 22 5/8 to 24 5/8 in, 58 to 63 cm (63.0 cm) | Nike chartchecked 2026-10-04 |
| Richardson Adjustable | adjustable | XL | 22 3/4 to 24 5/8 in, 58 to 63 cm (63.0 cm) | Richardson chartchecked 2026-10-04 |
| New Era 39THIRTY stretch-fit | stretch-fit | L/XL | 23 7/8 to 24 5/8 in, 60.6 to 62.5 cm (62.5 cm) | New Era chartchecked 2026-10-04 |
| adidas Hats and caps | adjustable | Adult (L/XL) | 23.6 to 24.4 in, 60 to 62 cm (62.0 cm) | adidas chartchecked 2026-10-04 |
| lululemon Hats in XS to XL | adjustable | XL | 23 5/8 to 24 3/8 in, 60 to 62 cm (62.0 cm) | lululemon chartchecked 2026-10-04 |
| Nike Swoosh Flex (stretch-fit) | stretch-fit | L/XL | 23 to 24 1/4 in, 59 to 62 cm (62.0 cm) | Nike chartchecked 2026-10-04 |
| Richardson System 5 (PTS75) | stretch-fit | XL | 23 7/8 to 24 1/4 in, 61 to 62 cm (62.0 cm) | Richardson chartchecked 2026-10-04 |
| '47 Adjustable caps | adjustable | OSFA | 22 to 24 in, 56 to 61 cm (61.0 cm) | '47 chartchecked 2026-10-04 |
| Boco Gear Hats | adjustable | XL | 58 to 61 cm (61.0 cm) | Boco Gear chartchecked 2026-10-04 |
| Flexfit DELTA (stretch-fit) | stretch-fit | L/XL | 22 3/8 to 23 7/8 in, 57 to 61 cm (61.0 cm) | Flexfit chartchecked 2026-10-04 |
| Flexfit 210 (stretch-fit) | stretch-fit | L/XL | 22 3/4 to 23 7/8 in, 58 to 61 cm (61.0 cm) | Flexfit chartchecked 2026-10-04 |
| Richardson R-Flex (stretch-fit) | stretch-fit | LG-XL | 23 1/8 to 23 7/8 in, 59 to 61 cm (61.0 cm) | Richardson chartchecked 2026-10-04 |
| Patagonia Hats (all styles) | adjustable | Large/X-Large | 22 3/4 to 24 in (61.0 cm) | Patagonia chartchecked 2026-10-04 |
| New Era 9FORTY adjustable | one-size | One Size | 22 to 23 7/8 in, 55.8 to 60.6 cm (60.6 cm) | New Era chartchecked 2026-10-04 |
| New Era 9TWENTY and Casual Classic | one-size | One Size Fits Most | 22 to 23 7/8 in, 55.8 to 60.6 cm (60.6 cm) | New Era chartchecked 2026-10-04 |
| Arc'teryx Hats and caps | adjustable | L - XL | 22 3/4 to 23 1/2 in, 58 to 60 cm (60.0 cm) | Arc'teryx chartchecked 2026-10-04 |
| On Caps (one size) | one-size | ONE SIZE | 21.7 to 23.6 in, 55 to 60 cm (60.0 cm) | On chartchecked 2026-10-04 |
| On Caps in S/M and L/XL | adjustable | L/XL | 21.7 to 23.6 in, 55 to 60 cm (60.0 cm) | On chartchecked 2026-10-04 |
Only charts a brand publishes on its own site are used, copied as printed. Brands that publish no head-size chart for their caps are named on the hat size chart and every published row is in the downloadable CSV. We have not yet measured the inside of any hat, so no hat is recommended here.
Frequently asked questions
Which brand makes the biggest hat size?
Of the 33 charts we checked, Lamood Big Hats Size chart reaches furthest: its 9 1/4 is listed for a head of 29 to 29 1/4 in, 73.2 to 74.1 cm. That is the chart's own wording, read on October 4, 2026.
How do I know a hat will fit a big head?
Start with your measurement, then pick a chart that lists a size covering it, not one that merely tops out nearby. A chart tells you the head a size is cut for. It does not tell you the crown depth, how stiff the band is, or how far a strap opens, which is what we measure on the hats themselves (see how we measure).
What if my head is between two sizes on a chart?
Where a brand says which way to go, follow it. Where it does not, the tool shows the two published sizes on either side and does not guess for you.
Keep going
- Hat Size Chart and Calculator: Your Size in Every Brand
Enter your head in cm or inches, or the size you wear, and see your US hat size and your size on 33 brand charts, each with its source and date.
- Hat Size Converter: Your Size in Every Brand, CSV and PDF
Pick the hat you wear and see the matching published size on every other brand chart, then download the full cross-brand table as CSV or a printable PDF.
- How to Measure Your Head for a Hat
Where the tape goes, how snug to pull it and how to read it, with or without a tailor’s tape, then turn the number into your size in any brand.
- Printable Head Measuring Tape (Calibrated PDF)
A free printable tape for measuring your head for a hat: 0 to 72 cm with inches, on Letter or A4, with a bank-card and 10 cm check for print scale.