👟 Brand to Brand
Allbirds to adidas Shoe Size Conversion
Switching from Allbirds to adidas? Allbirds runs true to size and adidas runs small, so the size you order changes. Here's the full chart.
A Allbirds 9 works out to a adidas 9.5 — about half a size up. The chart below has every size.
Allbirds → adidas: size up half a size
A Allbirds 9 is a adidas 9.5.
Find your Allbirds size on the left, read across for adidas:
| Allbirds size | adidas size | UK | EU | Foot (cm) |
|---|---|---|---|---|
| 6.5 | 7 | 5.5 | 37 | 23.5 |
| 7 | 7.5 | 6 | 38 | 24.3 |
| 7.5 | 8 | 6.5 | 38.5 | 24.7 |
| 8 | 8.5 | 7 | 39.5 | 25.1 |
| 8.5 | 9 | 7.5 | 41 | 25.9 |
| 9 | 9.5 | 8 | 41.5 | 26.3 |
| 9.5 | 10 | 8.5 | 42.5 | 26.7 |
| 10 | 10.5 | 9 | 43 | 27.1 |
| 10.5 | 11 | 9.5 | 43.5 | 27.5 |
| 11 | 11.5 | 10 | 44 | 27.9 |
| 11.5 | 12 | 10.5 | 44.5 | 28.3 |
| 12 | 12.5 | 11 | 45.5 | 28.7 |
| 12.5 | 13 | 11.5 | 46 | 29.1 |
| 13 | 13.5 | 12 | 47 | 29.5 |
| 13.5 | 14 | 12.5 | 47.5 | 29.9 |
| 14 | 14.5 | 13 | 48 | 30.3 |
| 14.5 | 15 | 13.5 | 49 | 31.1 |
| 15 | 15.5 | 14 | 49.5 | 31.5 |
⚠️ Fit varies by model. Allbirds runs true to size; half sizes are rounded, so go to the nearest whole. adidas generally runs about half a size small, particularly lifestyle and Ultraboost models; Sambas and Gazelles run long and narrow.
adidas to Allbirds → · Allbirds chart · adidas chart · Brand finder
What is a Allbirds 9 in adidas?
A Allbirds 9 is about a adidas 9.5 — they share a foot length of roughly 26.3 cm (UK 8, EU 41.5).
Do Allbirds and adidas fit the same?
No — Allbirds runs true to size and adidas runs small, so size up half a size when you switch.
ⓘ Affiliate links below. As an Amazon Associate we earn from qualifying purchases at no extra cost to you.
Recommended on Amazon
Foot Measuring Device
Measure once, buy any brand with confidence.
View on Amazon →