What is New Balance US 9 in EU?

About EU 42.5 on the New Balance reference chart (UK 8.5, ~26.3 cm). Confirm the model fit guide.

Is New Balance EU 42.5 the same as every brand?

No. EU labels can map to slightly different foot lengths. Match by cm, then adjust for the specific model.

Measure heel-to-longest-toe in cm, then use the cm converter and read the model page for width/last quirks.

Chart-matched conversion for a high-intent size query — then check the model last.

From brand_charts.csv — foot-length cm is the match key.

Chart labels are not lasts. Open a New Balance guide before you buy:

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

Other new-balance sizes: US 7 · US 7.5 · US 8 · US 8.5 · US 9.5 · US 10

What is New Balance US 9 in EU?: About EU 42.5 (UK 8.5, ~26.3 cm). Confirm the model guide.
How do I convert by foot length?: Measure in cm, then open the cm converter or foot-length guide.