Air Jordan 1 Low fits true to size for most people — same length as the AJ1 High and AJ1 Mid. The Low uses the same last as the High but with the ankle collar cut down below the bone. Based on 537 owner-reported pairs in the Feetlot database, the typical wearer takes the same number in AJ1 Low as in AJ1 High, AJ1 Mid, Nike Dunk Low, or Air Max 90. If unsure: order true to size. Wide feet should size up half.
AJ1 Low Sizing — What 537 Pairs in the Feetlot Database Tell Us
The Air Jordan 1 Low is one of the most-tracked Jordan silhouettes in the Feetlot database. Across 537 owner-reported pairs, the residual variance is tight (standard deviation ≈ 0.23 size units), meaning sizing is consistent across the various AJ1 Low colorways (OG, Retro, collab pairs, premium leather releases). The "AJ1 Low fits the same as the High" advice from sneaker shops lines up with what Feetlot data actually shows: the AJ1 Low, Mid, and High all sit within a quarter size of each other for the same wearer — same number across the three silhouettes.
The reason AJ1 Low runs true to size — same as the High — is the shared last. The High, Mid, and Low use identical forefoot, midfoot, and heel cup tooling. The Low cuts the ankle collar below the ankle bone, which removes the wraparound contact at the top but doesn't change anything about the foot's length or width inside the shoe. The leather upper softens at the throat over the first 10 hours of wear, the same as in the High.
Should You Size Up or Down in AJ1 Low?
Standard fit (most people)
Order true to size — same as the AJ1 High. The leather upper, structured heel cup, and lace closure pull the foot into the shoe at true size. The lower-cut collar doesn't change length. True-to-size is what most Feetlot owners report as the correct fit.
Wide feet
Size up half. The leather upper softens around the throat but doesn't widen the toe box. Without the High's wraparound collar, a too-narrow AJ1 Low pinches at the metatarsals more visibly than the High does. Width isn't offered separately on most AJ1 Low colorways. Half a size up is the standard wide-foot adjustment in the Feetlot database.
Narrow feet
True to size works for most narrow feet. The structured heel and lace closure compensate for some narrowness. Going half down occasionally fits very narrow feet, but the cut-down collar on the Low means a too-small pair has less wraparound to hold the foot in place compared to the High.
AJ1 Low OG vs AJ1 Low Retro
The OG AJ1 Low and the standard Retro AJ1 Low use the same last and follow the same length advice. Some OG-spec reissues (which try to replicate 1985 construction more faithfully) use slightly stiffer leather; that doesn't change the size you'd buy, just the day-one feel. Collab releases (Travis Scott, fragment, Union, etc.) use the standard Retro last and same true-to-size advice.
How AJ1 Low Compares to Other Sneakers
The AJ1 Low fits at the same numerical size as Air Jordan 1 (High), Air Jordan 1 Mid, Air Jordan 3, Air Jordan 4, Air Jordan 11, Nike Air Max 1, Air Max 90, Air Max 95, Air Max 97, Air Max 270, Nike Dunk Low, Nike Dunk High, SB Dunk Low, Nike Blazer Mid '77, Vans Authentic, Vans Old Skool, adidas Stan Smith, adidas Gazelle, adidas Superstar, adidas Samba OG, adidas NMD R1, New Balance 574, and YEEZY Boost 350 V2. According to Feetlot data, all of these round to the same size in 0.5 increments — same number you wear in AJ1 Low.
The shoes that run larger in number than AJ1 Low: Nike Air Force 1, Converse Chuck Taylor (Low and Hi), and Sperry Authentic Original all run about half a size larger than AJ1 Low — so if you wear AJ1 Low in 10, you'd take 9.5 in those. Boot-style models (Red Wing Iron Ranger) run a full size smaller than AJ1 Low in number — size down a full size from AJ1 Low there.
Sign in to Feetlot and add a few of your other sneakers to get a personal AJ1 Low size recommendation calibrated to your actual foot.
Air Jordan 1 Low Size Chart (US / EU / UK)
| US Men's | US Women's | UK | EU |
|---|---|---|---|
| 7 | 8.5 | 6 | 40 |
| 7.5 | 9 | 6.5 | 40.5 |
| 8 | 9.5 | 7 | 41 |
| 8.5 | 10 | 7.5 | 42 |
| 9 | 10.5 | 8 | 42.5 |
| 9.5 | 11 | 8.5 | 43 |
| 10 | 11.5 | 9 | 44 |
| 10.5 | 12 | 9.5 | 44.5 |
| 11 | 12.5 | 10 | 45 |
| 11.5 | 13 | 10.5 | 45.5 |
| 12 | 13.5 | 11 | 46 |
| 13 | 14.5 | 12 | 47.5 |
Common Sizing Mistakes
- Sizing differently for Low than High. The AJ1 Low uses the same last as the High. Same size in both — the cut-down collar doesn't change length.
- Buying AJ1 Low in your AF1 size. AF1 runs about half a size larger in number than AJ1 Low. If your AF1 fits half down from true Nike, then your AJ1 Low should be true to your Nike size — not also half down.
- Sizing for the heel — the Low has less heel containment. Without the High's collar wrap, a too-large AJ1 Low slips at the heel sooner than the High does. Stay true to size — don't size up "for room".
- Expecting the leather to widen. The toe box doesn't widen with break-in. Wide feet should size up half rather than waiting for stretch.
- Confusing GS sizing. AJ1 Low GS (Grade School) tops out at 7Y. Men's starts at 7. A "7" can mean either — check the box. Many limited-edition Lows release in GS-only sizing.
How Feetlot Computes These Numbers
Every Air Jordan 1 Low sizing recommendation on Feetlot is the output of a global offset model fit to over 100,000 owner-reported shoe records. Each shoe gets a single number — its "size offset" — that captures how its sizing drifts relative to a reference shoe (the Nike Air Force 1). When a Feetlot user provides their size in any tracked shoe, the model recovers their true foot baseline and recommends the matching AJ1 Low size.
This works better than the pairwise approach you'll see on most sizing blogs because Feetlot uses the entire wardrobe graph. A YEEZY 350 owner contributes data about how YEEZY fits relative to AF1 owners (who often own both), which links back to AJ1 Low owners through any shared model. Even when two users share zero shoes directly, the chain of users in between transmits a consistent recommendation. The result: sizing advice that holds up no matter how unusual a wardrobe is.