Measure Your Head in 3 Steps for Hat Size
Head circumference in inches or cm maps to fitted sizes like 7 1/4—measure once, then match a chart or the converter. Same wrap works for baseball fitted and cowboy hats.
3 quick steps
- Tool: Soft tape—or string + ruler if you have no tape.
- Wrap: Widest part of the head, ~1/8" above eyebrows and ears; keep level.
- Read & match: Note inches or cm, then use the converter or a fitted chart.
Head circumference to hat size
Common adult measurements and typical US fitted sizes (industry-standard rows):
| Head (in) | Head (cm) | US Fitted | Alpha |
|---|---|---|---|
| 22" | 56 cm | 7 | M |
| 22 3/4" | 58 cm | 7 1/4 | L |
| 23 1/8" | 59 cm | 7 3/8 | L |
| 23 1/2" | 60 cm | 7 1/2 | XL |
Full rows including size 8 / XXL: fitted hat size chart.
Step-by-step guide
1. Prepare your tool
A soft sewing tape is best. Otherwise use non-stretchy string, ribbon, or a phone cable plus a ruler or yardstick.
2. Position the tape correctly
Wrap at the largest circumference—usually mid-forehead and about 1/8 inch above the ears. Keep the tape level; check in a mirror.
3. Take the measurement
Snug but not digging in. Read inches or centimeters where the tape overlaps. That number is what charts and converters use.
Common mistakes to avoid
- Too high or too low: Brow line or crown-only readings run small.
- Pulling too tight: Leads to a hat that hurts—measure for comfort.
- Stretchy tools: Elastic string stretches; use non-stretch material.
Measuring FAQ
Got your measurement?
Convert inches or cm to fitted sizes (7 1/4, 7 3/8) and US / UK / EU labels.
Open hat size converter