Allbirds Men's Size Chart
Complete men's sizing guide for Allbirds with measurements, fit tips, and conversions
Use this men size chart to compare your measurements against Allbirds's official sizing. Each table shows body measurements and international conversions.
Fit Summary
Allbirds offers sustainable, minimalist sneakers made from natural materials. Shoes run true to size with a snug, sock-like fit. Their wool and tree materials have slight give.
Last updated: Q3 2026 · Reviewed quarterly by JC, SizeHub editor
Men's Sizing
Tops & Shirts
| Size | US | Chest (in) | Waist (in) | Neck (in) |
|---|---|---|---|---|
| XS | 34 | 34-36 | 28-30 | 14-14.5 |
| S | 36 | 36-38 | 30-32 | 14.5-15 |
| M | 38-40 | 38-40 | 32-34 | 15-15.5 |
| L | 42-44 | 42-44 | 34-36 | 15.5-16 |
| XL | 46-48 | 46-48 | 36-38 | 16-16.5 |
| XXL | 50-52 | 50-52 | 38-40 | 16.5-17 |
Pants & Bottoms
| Size | Waist (in) | Hip (in) | Inseam (in) |
|---|---|---|---|
| 28 | 28 | 34 | 30-32 |
| 30 | 30 | 36 | 30-32 |
| 32 | 32 | 38 | 30-32 |
| 34 | 34 | 40 | 30-32 |
| 36 | 36 | 42 | 30-32 |
| 38 | 38 | 44 | 30-32 |
Shoes
| US | UK | EU | Foot Length (cm) |
|---|---|---|---|
| 7 | 6 | 40 | 25 |
| 8 | 7 | 41 | 26 |
| 9 | 8 | 42 | 27 |
| 10 | 9 | 43 | 28 |
| 11 | 10 | 44 | 29 |
| 12 | 11 | 45 | 30 |
| 13 | 12 | 46 | 31 |
Shopping Tips
True to size for most. Half sizes are not available in all styles — if you're a half size, round up. The wool stretches slightly; tree material has less give.
Size Comparison
Similar to Nike casual sneakers in sizing. Narrower than New Balance. More minimalist than Brooks or HOKA.
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Frequently Asked Questions
Do Allbirds run true to size?
Yes, but they don't offer half sizes in all models. Round up if between sizes.
Do Allbirds stretch?
Wool Runners stretch slightly with wear. Tree styles have less give.
Are Allbirds machine washable?
Yes — remove insoles and laces, cold wash on delicate, air dry.
How to Measure
Chest
Measure around the fullest part of your chest, keeping the tape horizontal.
Waist
Measure around your natural waistline, keeping the tape comfortably loose.
Hips
Stand with feet together and measure around the fullest part of your hips.