Birkenstock Sizing Guide: EU to US Conversion & Width (2026)

Quick answer: Birkenstock uses European (EU) sizing and runs slightly large. If you are between sizes, size down. Most Birkenstocks also come in two widths — Regular and Narrow — so pick the width that matches your foot. The cork-and-latex footbed molds to your foot after a few wears.

What size Birkenstock should I get (EU to US)?

Birkenstocks are labeled in EU sizes. Use this conversion:

EU	US Women	US Men
36	5 – 5.5	—
37	6 – 6.5	—
38	7 – 7.5	5 – 5.5
39	8 – 8.5	6 – 6.5
40	9 – 9.5	7 – 7.5
41	10 – 10.5	8 – 8.5
42	11 – 11.5	9 – 9.5
43	12 – 12.5	10 – 10.5
44	—	11 – 11.5
45	—	12 – 12.5

If you fall between two sizes, choose the smaller EU size — Birkenstocks run a touch large.

Regular vs Narrow width — which Birkenstock width do I need?

Birkenstock makes most styles in Regular (medium/wide) and Narrow widths. On the footbed, the strap mounting differs: choose Narrow if your foot is slim or the regular feels loose at the straps, and Regular for an average-to-wide foot. Your toes should sit just behind the front edge with a little room, and your heel should be centered in the heel cup.

Do Birkenstocks need breaking in?

Yes — the cork-and-latex footbed is firm at first and softens to mold to your arch over the first week or two of wear. Start with a few hours a day. The molded footbed is exactly what makes Birkenstocks so supportive once broken in.

Which Birkenstock should I buy?

• The two-strap icon: Arizona (adjustable double strap).
• A toe-post / thong style: Gizeh.
• A dressier closed-toe option: Florida (soft footbed).
• A cross-strap look: Mayari.

Related Birkenstock guides

• Arizona sizing guide
• Boston & clog sizing guide
• Best Birkenstocks for plantar fasciitis
• How to clean Birkenstocks
• Where to buy Birkenstock in Los Angeles

Need help picking a size or width?

See our size guide, call (310) 398-7497, or visit our Feet World stores in Culver City and Arcadia, California to try the footbed in person.