What Does EE, 2E, 4E Mean in Shoe Size? Width Letters Decoded
EE is a wide men's shoe and an extra-wide women's shoe. 2E is the same as EE — different notation, identical width. 4E (or EEEE) is the next step beyond. Here's what each width letter means in millimeters, who needs them, and which brands actually stock them.
You spotted "EE" on a pair of running shoes, or "2E" on a dress shoe listing, or "4E" tucked into the size dropdown of a work boot. The numbers and letters look like the brand's internal shorthand. They aren't — they're the official US shoe-width standard.
The letter (or letter-number combination) tells you the width across the ball of the foot, measured in millimeters. Length is the size number; width is the letter. Most shoes ship in a single standard width, which is why so many shoppers don't realize their size of choice is the wrong width entirely.
The Width Letters at a Glance
| Width letter | Equivalent | Men's fit | Women's fit |
|---|---|---|---|
| AAA / 3A | Extra extra narrow | Rare | Extra narrow |
| AA / 2A | Extra narrow | Narrow | Narrow |
| A | Narrow | Narrow | Slim |
| B | Standard / Wide | Narrow | Standard medium |
| C | Wide / Standard | Narrow | Wide |
| D | Standard medium | Standard medium | Wide |
| E | Wide | Wide | Extra wide |
| EE / 2E | Extra wide | Extra wide | XX wide |
| EEE / 3E | XX wide | XX wide | Specialty |
| EEEE / 4E | XXX wide | XXX wide | Specialty |
| 6E | Extreme | Extreme | Specialty |
The headline rule
EE / 2E — Decoded in Millimeters
EE and 2E are two notations for the same width. Brands choose the format inconsistently — Nike says "2E," Brooks says "2E," New Balance says "2E," Allen Edmonds says "EE." Don't assume EE and 2E differ; they don't.
At men's US size 9, here is the width across the ball of the foot for each letter:
| Width | Ball of foot (mm) | Ball of foot (in) |
|---|---|---|
| B (narrow) | 94mm | 3.7" |
| D (standard) | 100mm | 3.94" |
| E (wide) | 103mm | 4.06" |
| EE / 2E | 106mm | 4.17" |
| EEE / 3E | 110mm | 4.33" |
| EEEE / 4E | 113mm | 4.45" |
| 6E | 119mm | 4.69" |
The increments are small (3mm per step) but you feel them. The difference between D and EE is the difference between toes that knuckle up against the leather and toes that splay flat. For a wider foot, EE is a transformation.
Men's vs Women's — Same Letter, Different Width
This is where most online buyers go wrong: the same letter means different things for men and women.
| Letter | Men's interpretation | Women's interpretation |
|---|---|---|
| B | Narrow | Standard medium (default) |
| D | Standard medium (default) | Wide |
| E | Wide | Extra wide |
| EE / 2E | Extra wide | XX wide (specialty) |
A women's size 9D is a wide shoe — the same width as a men's 9D in millimeters. The letter is the absolute width; the "fit" interpretation depends on what your gender's standard width is. Women shopping for D-width shoes are buying men's-width-equivalent uppers, often in unisex sneakers like Nike or New Balance.
Brands That Actually Stock EE / 2E / 4E
Athletic shoes (most reliable for wide widths)
Dress shoes
Work boots and steel-toe
Comfort and orthopedic specialists
Casual / fashion sneakers
How to Tell If You Need EE
- Does your standard size pinch at the toe knuckles? If the length is right but the front of the shoe pushes back against your forefoot, you're a wide foot in a standard width.
- Do you size up just to get more width? A common workaround. The shoe is too long but it's the only way to relieve the pinch. Size down to your real length and order EE in that size.
- Do you have visible bunion or hammertoe pressure? A standard D toe box will press the joint and inflame the area. EE / 4E removes the pressure.
- Do your feet swell during the day? Common in standing/walking jobs and in pregnancy. A D in the morning becomes a tight D by 4 PM. EE buys the room your foot needs at peak swelling.
- Are you between half-sizes? Sometimes the answer is half a size up in the same width — but if going up makes the heel slip, the answer was width all along.
The fastest way to confirm: trace your foot, measure the widest part across the ball, and compare to the brand's published width-mm chart. Read our foot measurement guide for the exact method.
Common Mistakes
Confusing 2E with size 2 in EU
EU shoes don't use width letters — EU is a length-only system. The "E" in EU 42 is just notation for Euro. 2E is a US width designation, separate.
Assuming W means EE
Some brands use "W" for wide. Whether W is E (one wider) or EE (two wider) varies by brand. Check the brand's width-to-mm chart — especially with Johnston & Murphy, where W is their full EE.
Buying online without checking width availability
Most fashion shoes don't list a width because they only come in one. If the listing has no width selector, assume D (men) or B (women). For wide-width shoppers, this is a no-go without checking the brand's wide line.
FAQs
What does EE mean on a shoe?
EE (also written 2E) is a wide width for men and an extra-wide width for women. On a US men's size 10, EE measures about 4.5 inches across the ball of the foot — roughly 6mm wider than a standard D width.
Is EE the same as 2E?
Yes. EE and 2E are two ways of writing the same width. Some brands prefer the letter notation (EE), others the number-letter notation (2E). 4E and EEEE are also identical.
What is the difference between D and EE?
D is the standard medium width for men. EE is wider — about 6mm wider at the ball of the foot. If a D feels tight across the toe knuckles or balls of your feet but the length is right, an EE in the same size is the next step.
Do all shoe brands offer EE width?
No. EE width is most common in dress shoes, work boots, athletic shoes from Nike/Adidas/Brooks/New Balance, and brands focused on comfort. Fashion sneakers and most casual shoes only come in standard D.
How do I know if I need EE?
Measure the ball of your foot in millimeters and compare to the brand's width chart. If your standard size pinches at the toe knuckles or you size up just to get more width, you likely need EE.
What about narrow widths — A, B, C?
B is the women's standard medium width and the men's narrow width. A and AA are extra-narrow widths. Most fashion shoes only come in B for women.
Get the Right Width on the First Order
Width is the silent half of shoe sizing. Length gets all the attention; width quietly decides whether the shoe will be comfortable or live in the back of the closet. Once you know your width letter (and it's the same across brands that publish a chart), you stop ordering shoes that almost fit.
Pair the right width with the right length using our men's shoe size chart or women's shoe size chart. And if you sell shoes on Shopify, Tailor Size Guide shows shoppers their length + width recommendation in one click — the difference between a returned shoe and a kept one.
Selling shoes on Shopify? Width is your hidden return driver.
Most footwear stores show length only and lose 30%+ of orders to width mismatches. Tailor Size Guide adds a length-and-width recommendation to every product page so customers stop ordering D when they need EE.