What size is New Balance US 11 in Asics?

About Asics US 11 (EU 45), matched by ~28 cm. Then adjust for the specific model.

Is a New Balance 11 the same as a Asics 11?

Not always. Labels can map to different foot lengths — use cm, then model fit.

Brand-to-brand size at a fixed US label — matched by foot length (cm), not guesswork.

New Balance US 11 maps to about 28 cm on that brand’s chart. The nearest Asics row at that length is US 11 / EU 45.

Same chart cm can still feel different on foot. Read the guides:

New Balance: 550 (runs narrow) · 990v6 (runs big) · 9060 (true to size) · 574 (true to size) · 2002R (true to size)

Asics: Gel-Kayano 31 (true to size) · Gel-1130 (true to size)

What size is New Balance US 11 in Asics?: About Asics US 11 (EU 45), via ~28 cm.
Where is the full size table?: New Balance to Asics compare.