Hat Size Guide

Home Prefer | Hat Size Guide (Measure • Convert • Calculator)

How to Measure Your Head

  1. Position: Wrap a soft tape level around the head, passing 1 cm above the eyebrows and the most prominent point at the back.
  2. Tension: Keep the tape snug without pressing; measure with your usual hairstyle.
  3. Record: Use centimetres as the base unit; if using inches, round to the nearest ⅛ in.
  4. Repeat: Measure 2–3 times and take the average to reduce error.
No soft tape? Use a string or paper strip, mark the overlap, then measure the length with a ruler.

Fit by style

  • Baseball/Bucket (adjustable): standard close fit.
  • Fedoras/Wide Brims (shaped): prefer slightly roomy rather than tight.
  • Knits/Beanies: stretch allows broader tolerance.
For liners/ear warmers or voluminous hair in winter, add 0.5–1 cm ease.
Head measuring method step 1 Head measuring method step 2

Size Calculator

Enter your head circumference to see a suggested size and nearest US/UK numbers.

Recommended range: 44–66 cm (17.3–26.0 in)
Audience: Auto (detected by input)
Suggested Size:
US Number:
UK/Alpha:
Tolerance Note:

If you cannot find a suitable size, please contact eva@homeprefer.com — we will provide a custom service for you.

International Size Chart

Head 54–63 cm

If you're between two sizes, choose the larger step or apply sizing tape along the inner band to stabilise.

Head (cm) Head (in) US Number UK/Alpha Common Note

FAQs - Hat Size Guide

How can I measure my head correctly?
Keep the measuring tape parallel to the ground. Wrap it around your head, starting at the middle of your forehead and around the widest part of the back of your head. Make sure it’s level—not tilted up or down. For accuracy, measure in front of a mirror or ask someone to help.
What should I do if my head size falls between two sizes?
We recommend choosing the larger size. A hat that is too small can feel tight and uncomfortable, while a slightly larger hat can be adjusted with sizing tape or an inner band.
What if the hat is too big?
You can use “hat sizing tape” or reducer strips. Place them inside the sweatband to effectively reduce the circumference. Typically, sizing tape can help decrease the size by about 1–2 cm.
Where can I get sizing tape?
Some hat styles include it. You can also purchase it in our Accessories section. For best results, apply at the 3, 9, and 12 o’clock positions inside the sweatband and adjust gradually.
Should I measure more than once?
Yes, we recommend measuring at least 2–3 times and using the most consistent result to avoid errors.
How do I measure a child’s head?
The method is the same as for adults. Children generally have smaller head circumferences, so please refer to the children’s size chart for the best fit.

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