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Allbirds

Our tool compares official Allbirds size charts to find your size. No measuring needed.

Foot measurement
Measure your foot length in millimetres
mm
27 people own Allbirds shoes Popular: Men's Tree Dasher 1, Men's Tree Runner, Men's Wool Runner

Most Searched Allbirds Models

All Allbirds Model Specific Sizing Guides

Source: the manufacturer's size guide

Foot Length EU UK US
21.0 - 22.0 cm 35 2 - 2.5 5
22.0 - 23.0 cm 36 3 - 3.5 6
23.0 - 24.0 cm 37 4-4.5 7
24.0 - 25.0 cm 38 5 - 5.5 8
25.0 - 26.0 cm 39 6 - 6.5 9
26.0 - 27.0 cm 40 7 - 7.5 10
27.0 - 28.0 cm 41 8 - 8.5 11
It depends on the model. Allbirds fit varies between styles, so a single verdict for the whole brand would be misleading, and we only publish a fit verdict where we have measured one. The dependable way to answer it for the pair you are buying is to work from a shoe you already own and know fits: enter it above and we will tell you which Allbirds size matches it.
Start from a shoe you already own that fits, rather than from your usual number. Enter it above and we will convert through foot length to the matching Allbirds size, which is the part that carries across brands. The EU to US offset is not the same for every brand, so a rule of thumb learned elsewhere will not hold here.
Not directly, because a size label means whatever the brand decides it means. A Nike 42 and an Adidas 42 are cut for different foot lengths, and so is a Allbirds 42. Foot length is the common unit, which is why our comparison works from the measurements behind each brands chart rather than from the number printed on the box.