whatsizetobuy

Asics to Nike size conversion

Match sizes by foot length (cm), then check model fit — US labels alone can mislead across brands.

Chart match · verify brand charts
Check current prices · Gel-Kayano 31 Check current prices · Air Force 1 '07

(paid link)

Full converter (model + shoes you own) · Reverse: Nike → Asics

Asics → Nike chart

Static conversion table (crawlable). Interactive tool above uses the same cm matching.

Asics UScmNike USNike EU
6.023.46.038.0
6.523.96.538.5
7.024.47.039.5
7.524.97.540.0
8.025.38.040.5
8.525.88.541.5
9.026.19.042.0
9.526.69.542.5
10.027.010.043.5
10.527.410.544.0
11.027.811.044.5
11.528.311.545.0
12.028.712.045.5
13.029.613.047.0

How this Asics → Nike chart actually maps

This page starts from Asics centimeters, not Nike’s 27.1. Asics US 10 is 27.0 cm and the nearest Nike US is also 10 (EU 43.5). The printed range is US 6 (23.4 cm → Nike EU 38.0) through US 13 (29.6 cm → Nike EU 47.0). The wear-box “Asics 10 ≈ Nike 10.0” is that Asics-side match. Nike lifestyle charts on sibling pages often list 27.1 cm at US 10; here the source column is Asics, so US 10 stays 27.0 and still lands on Nike 10.

Gel-Kayano 31 is TTS in length when you pick the right width (2E/4E rather than guessing with length); Gel-1130 is the same length-offset family. Nike lasts split: Air Force 1 '07 often feels long (many half down); Dunk Low and Pegasus 41 are closer TTS length references; Vomero 5 follows the running last. A chart-matched Kayano 10 can still feel long in an AF1 and snug in a tapered Dunk.

Convert from the Asics size that fits in length. Do not take a Kayano 10 into AF1 and then half-down again “because Force 1s run big” without checking — the chart already matched length. If Kayano mesh felt snug, that is a width-letter problem, not a reason to jump Nike to 10.5. Half a size on this table is 26.6 → 27.0 → 27.4 cm. Spend it on Nike last (Dunk vs AF1 vs Pegasus), not on stacking two brand habits.

Model fit matters

Even when charts match, lasts differ. Check these guides:

Asics: Gel-Kayano 31 · Gel-1130

Nike: Air Force 1 '07 · Dunk Low · Pegasus 41 · Vomero 5

Also compare Asics to: Brooks

Check prices: Asics Nike (paid link)

FAQ

How do I convert Asics shoe size to Nike?
Match by foot length in centimeters on each brand’s chart. Example: Asics US 10 ≈ Nike US 10.0 (about 27.0 cm). Then adjust for the specific model’s fit (runs big/small/narrow).
Is a Asics US 10 the same as a Nike US 10?
Not always. Labels can map to slightly different foot lengths. Use the cm column, then check model guides on both brands.
Which direction should I read first?
Start from the brand you already wear, then open the model fit pages linked below — lasts differ even when charts match.

Clothes sizing uses a separate compare path.