Bike helmets for a 54 cm head

A 54 cm head is 21.3 inches. Of the 115 helmets we track, 113 fit you — and here is the exact size to order in each brand.

113 helmets that fit a 54 cm head

Sorted by price. The size in the third column is the one to order — it is the size whose range is centred closest to 54 cm.

6 models are marked “snug”: 54 cm sits in the last 0.75 cm of that size, so the retention dial will be near its limit. It fits, but there is little room to spare.

So close

These models miss 54 cm by less than 1.5 cm. Head shape and padding thickness can swing a fit by roughly that much, so they are worth trying on in a shop — but we will not tell you they fit.

Is 54 cm a big head?

54 cm (21.3 in) sits in the middle of the adult range, which is good news: 98% of the models we track have a size for you, so you can choose on safety, weight and price instead of settling for whatever fits.

Measuring, in one minute

Wrap a tailor's tape (or a piece of string you then measure against a ruler) around your head about 1-2 cm above the eyebrows and above the ears — the widest part. Keep it level and snug, not tight. If you land between two numbers, use the bigger one: a helmet's dial can take up slack, it cannot create room.

54 cm is 21.3 inches. American size charts are usually written in inches, European ones in centimetres, and both describe the same measurement.

Related

• 53 cm head
• 55 cm head
• Size chart, all brands
• Safest helmets (Virginia Tech)