Never Buy the Wrong Shoe Size Again: Asics Sizing Revealed
May 21, 2025
Photo by Alin Surdu on Unsplash
Are Asics True to Size?
Finding the perfect fitting athletic shoes can be challenging, especially when shopping online. Asics, the renowned Japanese athletic footwear brand, has specific sizing characteristics that differ from other popular shoe brands. This comprehensive guide will help you find your ideal Asics size, whether you're shopping for running shoes, training shoes, or casual footwear. To navigate sizing challenges, explore our strategies to get the right shoe size for a seamless shopping experience.
Asics Women's Sizing Comparison
Women's Asics shoes fit true to size compared to Nike and New Balance in both UK and US sizes. When comparing to Adidas, they run true to size in UK measurements but half a size bigger in US sizes. This consistent sizing across major brands makes it easier for most women to select their correct size. To better understand size variations across brands, check out our detailed comparison guide.
Asics Women's Size Conversion Chart
| US Size | UK Size | EU Size |
|---|---|---|
| 4 | 2 | 34.5 |
| 4.5 | 2.5 | 35 |
| 5 | 3 | 35.5 |
| 5.5 | 3.5 | 36 |
| 6 | 4 | 37 |
| 6.5 | 4.5 | 37.5 |
| 7 | 5 | 38 |
| 7.5 | 5.5 | 39 |
| 8 | 6 | 39.5 |
| 8.5 | 6.5 | 40 |
| 9 | 7 | 40.5 |
| 9.5 | 7.5 | 41.5 |
| 10 | 8 | 42 |
| 10.5 | 8.5 | 42.5 |
| 11 | 9 | 43.5 |
| 11.5 | 9.5 | 44 |
| 12 | 10 | 44.5 |
| 12.5 | 10.5 | 45 |
Need more help with international sizing? Explore our complete guide to shoe sizing conversion charts for additional clarity.
Asics Men's Sizing Comparison
For men's shoes, Asics runs half a size smaller than Adidas, New Balance, and Hoka in UK sizes, while maintaining true to size correspondence in US and EU measurements. When comparing to Nike and Saucony, Asics fits true to size across all sizing systems (UK, US, and EU). For a deeper dive into size variations across brands, our comparison guide can help.
Asics Men's Size Conversion Chart
| US Size | UK Size | EU Size |
|---|---|---|
| 4 | 3 | 36 |
| 4.5 | 3.5 | 37 |
| 5 | 4 | 37.5 |
| 5.5 | 4.5 | 38 |
| 6 | 5 | 39 |
| 6.5 | 5.5 | 39.5 |
| 7 | 6 | 40 |
| 7.5 | 6.5 | 40.5 |
| 8 | 7 | 41.5 |
| 8.5 | 7.5 | 42 |
| 9 | 8 | 42.5 |
| 9.5 | 8.5 | 43.5 |
| 10 | 9 | 44 |
| 10.5 | 9.5 | 44.5 |
| 11 | 10 | 45 |
| 11.5 | 10.5 | 46 |
| 12 | 11 | 46.5 |
| 13 | 12 | 48 |
| 14 | 13 | 49 |
For more international sizing insights, refer to our complete guide to shoe sizing conversion charts.
Get Your Perfect Asics Fit
While these size charts and brand comparisons provide valuable guidance, individual fit can vary based on foot width, arch type, and intended use. Consider factors like sock thickness and whether you'll be using orthotics when selecting your size. If you're exploring other brands, check out sizing guides for Puma, Crocs, or Blundstone to compare.
For the most accurate sizing recommendation tailored to your unique needs, use our specialized sizing tool below to find your perfect Asics fit.