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New Balance 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 · 550 Check current prices · Gel-Kayano 31

(paid link)

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

New Balance → Asics chart

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

New Balance UScmAsics USAsics EU
6.023.66.038.5
6.524.16.539.0
7.024.67.040.0
7.525.18.041.0
8.025.58.041.0
8.526.09.042.5
9.026.39.042.5
9.526.89.543.0
10.027.210.044.0
10.527.611.045.0
11.028.011.045.0
11.528.511.545.5
12.028.912.046.0
13.029.813.047.5

How this New Balance → Asics chart actually maps

This page starts from New Balance centimeters. New Balance US 10 is 27.2 cm and the nearest Asics US is 10 (EU 44). That is the wear-box. The ladder is not fully 1:1: NB US 10.5 (27.6 cm) maps to Asics 11.0 (EU 45), skipping Asics 10.5; NB 7.5 (25.1 cm) maps to Asics 8.0; NB 8.5 (26.0 cm) maps to Asics 9.0. US 6 is 23.6 cm; US 13 is 29.8 cm. Those jumps are nearest-centimeter matching, not a claim that Asics runs small.

New Balance splits by width letters: 574 and 990v6 publish D / 2E / 4E; many 550 and 9060 colorways are D-only. Asics 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 chart-matched 990v6 10 in 2E can still feel different in Kayano mesh at Asics 10.

If you wear NB 10.5, the table’s Asics ticket is 11.0 — do not “correct” it back to 10.5 because the brands look 1:1 at US 10. If 550 felt tight in D, spend the next decision on Asics width letters, not on another length jump. Half a size on the NB column around US 10 is 26.8 → 27.2 → 27.6 cm; the last of those three already prints Asics 11. Use the cm column, then pick Kayano versus 1130.

Model fit matters

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

New Balance: 550 · 990v6 · 9060 · 574

Asics: Gel-Kayano 31 · Gel-1130

Check prices: New Balance Asics (paid link)

FAQ

How do I convert New Balance shoe size to Asics?
Match by foot length in centimeters on each brand’s chart. Example: New Balance US 10 ≈ Asics US 10.0 (about 27.2 cm). Then adjust for the specific model’s fit (runs big/small/narrow).
Is a New Balance 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.