What size am I in Allbirds?

Measure your foot length in mm, then use the Allbirds size chart above or our interactive calculator. For example, a 270mm foot is typically US 9 in most brands.

Allbirds Size Chart — US, EU, UK Conversion

Fit note: Runs 8mm large — consider going half size down.

📏 Find Your Allbirds Size

Enter your foot length to get your exact Allbirds size instantly.

Foot length (mm)

Gender

Men's Sizes

US	EU	UK	CM
8	41	7	26.0
8.5	41.5	7.5	26.5
9	42	8	27.0
9.5	43	8.5	27.5
10	43.5	9	28.0
10.5	44	9.5	28.5
11	45	10	29.0
11.5	45.5	10.5	29.5
12	46	11	30.0
13	47.5	12	31.0
14	49	13	32.0

Women's Sizes

US	EU	UK	CM
8	41	7	26.0
8.5	41.5	7.5	26.5
9	42	8	27.0
9.5	43	8.5	27.5
10	43.5	9	28.0
10.5	44	9.5	28.5
11	45	10	29.0
11.5	45.5	10.5	29.5
12	46	11	30.0
13	47.5	12	31.0
14	49	13	32.0

Model-Specific Fit Guide

Different Allbirds models fit differently. Check your specific shoe below.

Model	Fit	Tip
Natural Courier	Runs large (+2.0mm) Wide	Runs large, size down half
Tree Breezers	Runs large (+2.0mm) Wide	Runs large, size down half
Tree Dasher	Runs large (+2.0mm) Wide	Runs large, size down half
Tree Flyer	Runs large (+2.0mm) Wide	Runs large, size down half
Tree Lounger	Runs large (+2.0mm) Wide	Runs large, size down half
Tree Runner	Runs large (+2.0mm) Wide	Runs large, size down half
Wool Crossover	Runs large (+2.0mm) Wide	Runs large
Wool Pipers	Runs large (+2.0mm) Wide	Runs large, size down
Wool Runner	Runs large (+2.0mm) Wide	Runs large, size down half
Wool Runner Mizzle	Runs large (+2.0mm) Wide	Runs large, size down half

SIMILAR FIT

361 Degrees APL ASICS ASOS Adidas Alden