Brand Guides
Nike Size Guide
2 min read · Updated July 1, 2026
Nike's lineup is not one fit. Performance running is true to size; lifestyle silhouettes run half a size long; Jordan sits somewhere in between. Here's the per-line breakdown.
Performance running: true to size
Pegasus, Vomero, Invincible, Structure — Nike's core running lineup all fits true to size for most feet. The last is medium volume with a moderate toe box. Wide-footed runners should order the 'Wide' width when offered rather than sizing up.
Lifestyle: half a size large
Air Force 1, Air Max 90, Air Max 97, Dunk — all fit roughly half a size large. Most wearers go down half a size, especially in the AF1 Low, which is the single most oversized silhouette in the lineup. Air Max 1 fits closer to true to size than the newer 90/97.
| Silhouette | Fit vs true | Recommendation |
|---|---|---|
| Pegasus (running) | True to size | Buy your usual |
| Vomero (running) | True to size | Buy your usual |
| Air Force 1 | Half size large | Size down 0.5 |
| Dunk Low | Half size large | Size down 0.5 |
| Air Max 90 | Half size large | Size down 0.5 |
| Air Max 1 | True to size | Buy your usual |
| Blazer Mid | True to size | Buy your usual |
| Jordan 1 | Half size large | Size down 0.5 |
| Jordan 4 | True to size | Buy your usual |
| Jordan 11 | True to size (narrow) | Wide feet size up 0.5 |
Women's vs men's
Nike publishes women's sizes 1.5 US sizes above men's for the same last. A men's 8 = a women's 9.5 in the same shoe. Some Jordan silhouettes and Air Max colorways are men's-only; women who want them convert down 1.5.
Width
Nike lasts run medium-narrow by default. Air Force 1 is unusually wide; most running shoes offer a 'Wide' width (marked '4E' in men's, '2E' in women's) that adds roughly 8 mm of width across the ball. Beyond that, Nike doesn't offer Extra Wide — wide-footed shoppers should consider New Balance or Brooks.
The EU conversion at Nike
Nike uses half sizes in EU labeling — 42, 42.5, 43, 43.5 — which is not standard for the EU system but matches the US half-size grid. Don't be surprised by an EU 42.5 on a Nike box; it corresponds to a US men's 9.
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Convert your Nike size
US, EU, UK across men's, women's, and kids.
Frequently asked questions
- Do all Air Max silhouettes run large?
- Most of the modern lineup (90, 97, 270) runs half a size large. Air Max 1 and Air Max 95 fit closer to true to size.
- Which Nike runs the narrowest?
- Jordan 11 and the Kobe basketball line. Wide-footed wearers usually size up half a size in these.
- Are Nike kids' sizes the same as adult?
- The big-kid scale (1Y–7Y) shares the adult men's last from 7Y onward. A 7Y and a men's 7 are the same shoe at a lower price.
Keep reading
Calculators
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How to Measure Your Feet Correctly
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Reviewed by the SizeAtlas editorial team · Last updated July 1, 2026