Nike Air Monarch IV fits true to size for most people — the same number as Air Jordan 1, Air Max 90, Nike Dunk Low, and YEEZY Boost 350 V2, and about half a size larger in number than Air Force 1, adidas Superstar, and Converse Chuck Taylor. Based on 217 owner-reported pairs in the Feetlot database, the typical wearer takes the same number in Monarch IV as in AJ1 or AM90. If unsure: order true to size. Coming from AF1 or Superstar: size up half. Wide feet can order in 4E (extra wide) — Monarch IV is one of the few Nike sneakers offered in wide widths.
Air Monarch IV Sizing — What 217 Pairs in the Feetlot Database Tell Us
The Nike Air Monarch IV is the most-tracked Nike dad shoe in the Feetlot database. Across 217 owner-reported pairs, the residual variance is tight (standard deviation ≈ 0.25 size units). Feetlot data places Monarch IV at offset +0.274 — right in the AJ1/AM90/Dunk cluster — about half a size above AF1 and half a size below YEEZY 350 V2 in the raw model, though all rounding to the same size at 0.5 increments as AJ1 and AM90.
The Nike Air Monarch IV is unusual among Nike sneakers in being offered in D (standard), 2E (wide), and 4E (extra wide) widths. This makes it one of the most accessible Nike models for wide-footed buyers who need correct length sizing in a wider width.
Should You Size Up or Down in Air Monarch IV?
Standard fit — coming from AJ1, AM90, or Dunk
Order true to size. AJ1, AM90, Nike Dunk, SB Dunk Low, and Dunk High all round to the same size as Monarch IV in 0.5 increments. Same number in all of them.
Standard fit — coming from AF1, Superstar, or Chuck Taylor
Size up half. AF1, Superstar, and Chuck Taylor run about half a size smaller in number than Monarch IV. If you wear AF1 in 10, take Monarch IV in 10.5.
Wide feet
Order true to size in the appropriate width (2E for wide, 4E for extra wide). Don't size up in standard D width to accommodate width — Monarch IV's wide-width options exist precisely for this. True-to-size length in 2E or 4E is far better than sizing up in D.
Narrow feet
True to size in D (standard) width. The lacing system and padded collar hold narrow feet without issue.
How Air Monarch IV Compares to Other Sneakers
The Nike Air Monarch IV fits at the same numerical size as Air Jordan 1, Air Jordan 4, Nike Air Max 90, Air Max 97, Air Max 270, Nike Dunk Low, Nike Dunk High, SB Dunk Low, Nike Blazer Mid '77, Vans Authentic, adidas NMD R1, adidas YEEZY Boost 350 V2, and New Balance 574. According to Feetlot data, all of these round to the same size in 0.5 increments.
The shoes that run larger in number than Monarch IV (size up half from those): Nike Air Force 1, adidas Superstar, adidas Stan Smith, Converse Chuck Taylor Ox, Converse Chuck Taylor Hi, and Sperry Authentic Original. If you wear AF1 in 10, take Monarch IV in 10.5.
Boot-style models: Red Wing Iron Ranger and Clarks Desert Boot run about a full size smaller in number. If you wear Iron Ranger in 10, take Monarch IV in 11.
Sign in to Feetlot and add a few of your other sneakers to get a personal Monarch IV size recommendation.
Nike Air Monarch IV 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 |
| 14 | 15.5 | 13 | 48.5 |
Common Sizing Mistakes
- Buying Monarch IV in your AF1 size. AF1 runs about half a size smaller in number. If you wear AF1 in 10, take Monarch IV in 10.5.
- Sizing up in standard D width for wide feet. Monarch IV is available in 2E (wide) and 4E (extra wide). Order the correct length in the appropriate width — don't size up in D for width room.
- Assuming Monarch IV runs differently than other Nike training shoes. Monarch IV is in the same size bucket as AJ1, AM90, and Dunk. No adjustment needed between these models.
How Feetlot Computes These Numbers
Every Air Monarch IV 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). The result: sizing advice that holds up no matter how unusual a wardrobe is.