New Balance Shoe Size Guide
New Balance runs large: 45% of wearers report a true fit, 5% find it small and 50% find it large. Use the table below to convert your foot length in millimetres straight to US, UK, EU and CM sizes — the one measurement every system agrees on. Wide-foot widths are offered, so most foot shapes can find a fit.
Best fit recommendation for New Balance
For a 278 mm foot, New Balance runs large. Best fit: US 10.5 (likely US 9.5–11.5), UK 9.5, EU 41, 27.5 cm — confidence 50%.
| Best fit | Likely range | UK | EU | CM | Confidence |
|---|---|---|---|---|---|
| US 10.5 | US 9.5–11.5 | 9.5 | 41 | 27.5 | 50% |
Evidence: 2 sources · no lab measurement in this record
See how we calculate for the methodology. Sizes vary by model and foot shape; this is an estimate, not a guarantee.
Save your New Balance size passport
Save your foot length and usual US size here, then reuse it on comparisons and other brand guides.
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New Balance size conversion table
| Foot length | US Men | US Women | UK | EU | CM |
|---|---|---|---|---|---|
| 240mm | 6.5 | 8 | 5.5 | 36 | 24 |
| 250mm | 7.5 | 9 | 6.5 | 38 | 25 |
| 260mm | 8.5 | 10 | 7.5 | 39 | 26 |
| 270mm | 10 | 11.5 | 9 | 41 | 27 |
| 280mm | 11 | 12.5 | 10 | 42 | 28 |
| 290mm | 12.5 | 14 | 11.5 | 44 | 29 |
| 300mm | 13.5 | 15 | 12.5 | 45 | 30 |
EU sizes are always rounded to a whole size — there is no exact half-size equivalent, so treat the EU column as the closest honest match.
Does New Balance run big or small?
New Balance often runs slightly large — many wearers go down half a size compared with Nike.
How New Balance fits
Across our data New Balance runs large. Of wearers, 5% report it runs small, 45% true to size, and 50% large.
| Runs small | True to size | Runs large |
|---|---|---|
| 5% | 45% | 50% |
New Balance width & wide feet
This brand offers widths beyond standard D. New Balance wide-fit guide →
Where this data comes from
Built from 1 New Balance record . See how we calculate for how confidence is scored.
Compare New Balance sizing
Switching brands? Compare the same foot length against other popular lasts.
Popular New Balance models
Model-specific fit verdicts — these run differently from the brand average, so check the exact silhouette you're buying.
How did New Balance fit you?
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