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Welding cap size chart

Welding caps are sold in fitted sizes. Enter your head measurement to find your size before you order.

Hat size calculator

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Enter your head measurement to see your size in every system.

Welding cap sizes

Most welding caps follow standard fitted sizes. Measure where the band will sit, with the tape passing over the nape of your neck, and match the number to the chart.

Welding cap sizes
Fitted sizecmInches
6 ¾ 53.7 21 ⅛
6 ⅞ 54.6 21 ½
7 55.6 21 ⅞
7 ⅛ 56.5 22 ¼
7 ¼ 57.5 22 ⅝
7 ⅜ 58.4 23
7 ½ 59.7 23 ½
7 ⅝ 60.6 23 ⅞
7 ¾ 61.6 24 ¼
7 ⅞ 62.5 24 ⅝
8 63.5 25

Crown depth

Welding caps come with low, medium and deep crowns. A deep crown covers more of the head and suits long or thick hair; a low crown fits closer under a welding helmet. Crown depth does not change the head size you order.

Reversible and oversize caps

Reversible caps have two layers of fabric and can feel slightly snug, so if you are between sizes, choose the larger one. Oversize caps are cut for big hair, locs or wearing over a head wrap.

Fit tips

  • Welding caps are usually 100% cotton, which shrinks in a hot dryer. Wash cold and air dry.
  • Cotton is the safe choice near sparks. Avoid synthetic caps, which can melt.

How to measure your head

  1. 1 Use a soft tape measure, or a string and a ruler.
  2. 2 Wrap it around your head where the hat will sit: about 1 cm (⅜ in) above your ears and across the middle of your forehead.
  3. 3 Keep the tape level and snug, not tight. Do not pull it in.
  4. 4 Read the number where the tape overlaps. Measure two or three times and use the largest value.
  5. 5 Type the number into the calculator, or find it in the chart.
How to measure

Frequently asked questions

How do I measure for a welding cap?

Wrap a soft tape from the centre of your forehead, around the nape of your neck and back, where you want the band to sit.

What size welding cap fits a 23-inch head?

A 7 ⅜.

Should a welding cap be tight?

Snug enough to stay put under a helmet, but not so tight that it leaves a mark.

Related charts

All charts