Is Birkenstock true to size?

Birkenstock runs large for most buyers: 35% report a true fit, 5% find it small, and 60% find it large (confidence 68%). Model-level fit can differ — this is the brand-level aggregate from our sourced data.

Best fit recommendation for Birkenstock

For a 275 mm foot, Birkenstock runs large. Best fit: US 10 (likely US 9–11), UK 9, EU 41, 27 cm — confidence 70%.

Recommended size for a 275 mm foot on Birkenstock (best fit + range, not a guarantee)
Best fit Likely range UK EU CM Confidence
US 10 US 9–11 9 41 27 70%

Evidence: 2 sources · no lab measurement in this record

See how we calculate for the methodology. Sizes vary by model and foot shape; this is an estimate, not a guarantee.

What size should I start with in Birkenstock?

Consider half a US size down from your usual size in Birkenstock. See the full Birkenstock sizing guide or size chart.

Reference sizes at 275 mm foot length
US Men UK EU CM
10.5 9.5 41 27.5

Does Birkenstock run small or large?

Our fit offset for Birkenstock is +0.5 size steps (negative = runs small). Compare with all brands ranked by fit.