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Adidas to Asics 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 · Samba OG Check current prices · Gel-Kayano 31

(paid link)

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

Adidas → Asics chart

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

Adidas UScmAsics USAsics EU
6.023.56.038.5
6.524.06.539.0
7.024.57.040.0
7.525.07.540.5
8.025.48.041.0
8.525.98.542.0
9.026.29.042.5
9.526.79.543.0
10.027.110.044.0
10.527.510.544.5
11.027.911.045.0
11.528.411.545.5
12.028.812.046.0
13.029.713.047.5

How this Adidas → Asics chart actually maps

Adidas US 10 is 27.1 cm and the nearest Asics US is also 10 (EU 44). The printed ladder is 1:1 from US 6 (23.5 cm) through US 13 (29.7 cm). The wear-box “Adidas 10 ≈ Asics 10.0” is that centimeter match — it does not say Samba OG and Gel-Kayano 31 share a last. Both columns print EU 44 at that US 10.

Samba OG is TTS length but narrow; Gazelle often feels a half long; Campus 00s and Ultraboost 1.0 follow their own volume. Asics on this page is a running toolkit: 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, a different last. A chart-matched Samba 10 can still pinch in Kayano mesh; that is width, not a short Asics chart. Lifestyle Kayano 14 is not this page.

Convert from the Adidas size that fits in length. If you already downsize Gazelle, do not auto-downsize Kayano. If Samba feels narrow, spend the next decision on Asics width letters, not on jumping to 10.5. Half a size on this table is 26.7 → 27.1 → 27.5 cm. That is a length tweak, not a substitute for 2E.

Model fit matters

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

Adidas: Samba OG · Gazelle · Ultraboost 1.0 · Campus 00s

Asics: Gel-Kayano 31 · Gel-1130

Also compare Adidas to: Puma · Reebok · New Balance

Check prices: Adidas Asics (paid link)

FAQ

How do I convert Adidas shoe size to Asics?
Match by foot length in centimeters on each brand’s chart. Example: Adidas US 10 ≈ Asics US 10.0 (about 27.1 cm). Then adjust for the specific model’s fit (runs big/small/narrow).
Is a Adidas US 10 the same as a Asics 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.