Do the Nike Cortez work for wide feet?

This last is often narrow or low-volume. Heritage narrow last; toe box is snug and does not stretch much Wide feet may need a half size up, a wide SKU, or a roomier sibling — see Related guides.

Should I size up in the Nike Cortez for thick socks or break-in?

Break-in: Minimal length change; leather softens slightly but stays slim. Thick socks add volume — try the sock you will wear with the usual size advice before jumping a full size. See the thick socks & boot break-in guides.

Does Nike Cortez Run Big or Small? Size up guide

Runs Small Size up half a size — especially if average-to-wide feet

VerifiedLast reviewed 2026-08-12

Runs smallTrue to sizeRuns big

Length often runs short vs street size (offset +0.5 US).

Width note: Heritage narrow last; toe box is snug and does not stretch much

What size should you buy?

Your usual size

Interactive suggestion based on this model’s fit offset (+0.5 US). Always confirm with a retailer return policy.

Brand / model converter · Compare brands · Guides

Measured / size chart (cm)

Numbers only when sourced. Empty fields stay blank — we do not invent mm.

Forefoot width: 88.3 mm
Toebox width: 70.2 mm
Reference size: US_M9

Lab measurement · Source: RunRepeat lab (Cortez 23 Premium Leather) · Updated: 2026-08-13

Lab width/toebox at US men's 9 on Cortez 23 Premium Leather cut (heritage Cortez family). Narrow forefoot — length advice still half-up for many.

Know your foot length? Open the cm → size converter.

Nike size chart (foot-length cm)
US M	UK	EU	cm
6	5.5	38	23.5
6.5	6	38.5	24
7	6.5	39.5	24.5
7.5	7	40	25
8	7.5	40.5	25.4
8.5	8	41.5	25.9
9	8.5	42	26.2
9.5	9	42.5	26.7
10	9.5	43.5	27.1
10.5	10	44	27.5
11	10.5	44.5	27.9
11.5	11	45	28.4
12	11.5	45.5	28.8
13	12.5	47	29.7

Chart cm is approximate foot length for label matching — not a lab internal cut. Use the cm converter to map foot length across brands.

Fit scenarios

Between sizes: Start with the advice above, then confirm with the between-sizes / half-size guide.
Width: Length and width are separate — see wide feet / narrow fit.
Break-in: Plan for stiff leather or structured lasts — boot break-in sizing.

Width: Heritage narrow last; toe box is snug and does not stretch much
Break-in: Minimal length change; leather softens slightly but stays slim

Summary

Nike Cortez commonly runs short and narrow versus modern sneakers. Most wearers size up half a size; wide feet may still feel squeezed. Narrow feet can sometimes stay TTS for a locked vintage fit. Recent Cortez updates stay true to that slim heritage last.

Sources: SizeChartGuru Cortez (about half small and narrow; +0.5 for regular/wide) · SizeChartGuru Nike table (Cortez narrow; TTS narrow feet, +0.5 wide) · Stylight Nike (Cortez TTS but tight forefoot — half up if wide) · methodology

Women’s sizing

Nike uses a 1.5-size women’s→men’s US gap (not always 1.5). Convert your women’s US size with this model’s fit offset built in.

Women’s size in Cortez · All brands

What size did you take?

Anonymous fit check for Nike Cortez. Helps future readers — we never invent crowd stats.

Community results stay private until 25 responses for this page — no fake percentages.

Prefer email? Fit feedback.

FAQ

Does the Nike Cortez run big or small?: Runs Small. Size up half a size — especially if average-to-wide feet Nike Cortez commonly runs short and narrow versus modern sneakers. Most wearers size up half a size; wide feet may still feel squeezed. Narrow feet can sometimes stay TTS for a locked vintage fit. Recent Cortez updates stay true to that slim heritage last.
What size should I buy in the Nike Cortez?: Size up half a size — especially if average-to-wide feet
What if I am between sizes in the Nike Cortez?: If you are between sizes in the Nike Cortez, lean toward the larger size (Size up half a size — especially if average-to-wide feet). Confirm width: Heritage narrow last; toe box is snug and does not stretch much.
Do the Nike Cortez work for wide feet?: This last is often narrow or low-volume. Heritage narrow last; toe box is snug and does not stretch much Wide feet may need a half size up, a wide SKU, or a roomier sibling — see Related guides.
Should I size up in the Nike Cortez for thick socks or break-in?: Break-in: Minimal length change; leather softens slightly but stays slim. Thick socks add volume — try the sock you will wear with the usual size advice before jumping a full size. See the thick socks & boot break-in guides.

Generic US / UK / EU / cm reference

Secondary Mondopoint-style table. Prefer the brand chart in Measured / size chart (cm) when converting. Primary system: US_M.

US	UK	EU	cm
6	5.5	39	24.0
6.5	6	39.5	24.5
7	6.5	40	25.0
7.5	7	40.5	25.5
8	7.5	41	26.0
8.5	8	42	26.5
9	8.5	42.5	27.0
9.5	9	43	27.5
10	9.5	44	28.0
10.5	10	44.5	28.5
11	10.5	45	29.0
11.5	11	45.5	29.5
12	11.5	46	30.0
13	12.5	47.5	31.0

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Does the Cortez run big or small?