adidas Originals Size Guide
adidas Originals represents the classic sportswear heritage of the three-stripe brand, offering iconic trainers, lifestyle footwear, and casual apparel. adidas footwear is engineered using the US sizing system and is true to size, requiring no adjustment up or down a size. However, regional sizing conversions (UK and EU) have known variances from the standard conversion formulas, and this guide accounts for those discrepancies. adidas footwear is designed for everyday wear, performance support, and timeless style, appealing to sneaker enthusiasts and casual wearers alike.
How to Measure
- For Foot Length: Remove the insole from a pair of trainers that fit you well. Place the insole on a flat surface.
- Using a steel measuring tape, measure from the extreme tip of the toe to the extreme tip of the heel of the insole.
- Record the measurement in centimetres. The measurement will always round to the nearest 0.5 cm (e.g., 23.0 cm or 23.5 cm, never 23.2 cm).
- Cross-reference your foot length measurement with the shoe size chart below to find your adidas size in your preferred region (US, UK, or EU).
- For Clothing: Measure around the fullest part of your chest while wearing a comfortable t-shirt, keeping the tape measure parallel to the ground. For waist, measure around the narrowest part. For hips, measure around the fullest part.
- Compare all three measurements to the clothing size chart to select the best fit; if measurements fall between sizes, choose the larger size for comfort.
Footwear Size Chart
| UK | US Men's | US Women's | EU | Foot Length (cm) |
|---|---|---|---|---|
| 3.5 | 4 | 5 | 36 | 22.1 |
| 4 | 4.5 | 5.5 | 36⅔ | 22.5 |
| 4.5 | 5 | 6 | 37⅓ | 22.9 |
| 5 | 5.5 | 6.5 | 38 | 23.3 |
| 5.5 | 6 | 7 | 38⅔ | 23.8 |
| 6 | 6.5 | 7.5 | 39⅓ | 24.2 |
| 6.5 | 7 | 8 | 40 | 24.6 |
| 7 | 7.5 | 8.5 | 40⅔ | 25.0 |
| 7.5 | 8 | 9 | 41⅓ | 25.5 |
| 8 | 8.5 | 9.5 | 42 | 25.9 |
| 8.5 | 9 | 10 | 42⅔ | 26.3 |
| 9 | 9.5 | 10.5 | 43⅓ | 26.7 |
| 9.5 | 10 | 11 | 44 | 27.1 |
| 10 | 10.5 | 11.5 | 44⅔ | 27.6 |
| 10.5 | 11 | 12 | 45⅓ | 28.0 |
| 11 | 11.5 | 12.5 | 46 | 28.4 |
| 11.5 | 12 | 13 | 46⅔ | 28.8 |
| 12 | 12.5 | 13.5 | 47⅓ | 29.3 |
| 12.5 | 13 | 14 | 48 | 29.7 |
| 13 | 13.5 | 14.5 | 48⅔ | 30.1 |
| 13.5 | 14 | 15 | 49⅓ | 30.5 |
| 14 | 14.5 | – | 50 | 31.0 |
Product-Specific Guidance
Trainers and Running Shoes: adidas trainers run true to US size. If you have owned adidas footwear previously, repurchase the same size; sizing standards have remained consistent. When converting from UK or EU sizes, note that adidas uses a half-size conversion between US and UK (e.g., US 10 = UK 9.5), which differs from many American brands. For EU sizes of 36 or larger, adidas EU conversions run approximately 0.7 of a size smaller than expected, so if you want EU 43.3, purchase EU 44. Smaller EU sizes (below 36) follow the correct calculation.
Lifestyle and Casual Footwear: The same sizing rules apply to adidas Originals casual shoes and lifestyle trainers. Fit is consistent across the range, so your measured foot length in centimetres is the most reliable guide. If your foot length falls between sizes, choose the larger option for comfort, particularly if you plan to wear thick socks.
Clothing (Tops and Jackets): adidas Originals apparel typically follows standard sizing. Measure your chest at the fullest point and compare to the size chart. Vintage and retro-inspired pieces from the Originals collection may have a slimmer or more relaxed cut depending on the specific model; always check product descriptions for fit notes.
Tracksuits and Bottoms: For bottoms, waist measurement is essential. adidas Originals tracksuits are designed for a comfortable, layered fit. Check the inseam or length details provided in product descriptions, especially if you are particularly tall or short, as inseams vary by style.
Sizing Tips
- adidas footwear is true to US size with no need to size up or down. Stick to your measured foot length in centimetres for the most accurate size selection.
- UK sizes on adidas shoes run approximately half a size smaller than the US equivalent, so if you wear US 10, select UK 9.5 rather than UK 10.
- EU sizes 36 and above are undersized by adidas's conversion formula; if you want EU 43, purchase EU 44 to account for the discrepancy.
- If you have owned adidas footwear before, buy the same size again—adidas sizing standards have not changed and you can rely on consistency within the brand.
- For clothing, measure yourself wearing a t-shirt you find comfortable, as this reflects the ease of fit you prefer. adidas Originals pieces tend to have a classic, slightly relaxed silhouette, so avoid over-sizing unless layering is your goal.
- When ordering online from different regions, convert your size using the full conversion chart above rather than assuming one regional size maps directly to another. Regional conversions can introduce a half-size error.
- Retro and vintage-style adidas Originals may have tighter or looser cuts depending on the era they reference; always review product images and customer reviews before purchasing heritage-inspired pieces.