By Mohit Patel, Marketing Specialist, Tailor Size Guide
What Does D Width Mean in Shoes? Men's vs Women's Guide
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Add Tailor Size Guide as a preferred source on GoogleD width means something different depending on whose shoe it is. On a men's shoe, D is the standard medium width: it's what you get when a men's shoe doesn't list a width at all. On a women's shoe, D is a wide width, two steps wider than the women's standard, which is B (often labelled M).
So a men's 9D is a normal men's shoe, and a women's 9D is a wide women's shoe. The letter is the same, but the fit category isn't, because men's and women's lasts start from different standard widths. This guide explains the full width scale, how D compares with B, E and 2E, how to tell which width you need, and what to do when a shoe you love only comes in D.
Key takeaways
- Men's D = medium (standard). Women's D = wide.
- Women's standard width is B, often written M. Men's wide is 2E (EE).
- Each width step is roughly 3/16 inch (about 5 mm) wider at a given length.
- Width grows with length: a size 11 D is wider than a size 8 D.
- Measure your foot's width at the ball, late in the day, and compare with the brand's chart.
The US shoe width scale
US shoe widths use letters, with more letters (or a number before E) meaning wider. Men's and women's scales use the same letters but start in different places:
| Width category | Women's | Men's |
|---|---|---|
| Extra narrow | 4A (AAAA) | 2A or 3A |
| Narrow | 2A (AA) | B |
| Medium / standard | B (or M) | D (or M) |
| Wide | C or D (often W) | 2E (EE) |
| Extra wide | 2E (EE), sometimes E | 4E (EEEE) |
| Extra extra wide | 4E | 6E |
The key line is the bold one. "Medium" is B for women and D for men. That's why D appears as standard in the men's column and as wide in the women's column.
Many brands simplify widths to letters like N (narrow), M (medium), W (wide) and XW (extra wide). Our explainer on what N, M, W and XW mean maps those to the letter widths, and what B width means in women's shoes covers the women's standard.
How much wider is each width?
On the width scale used with the widely used Brannock foot-measuring device, each width step is roughly 3/16 of an inch (about 5 mm) wider than the one before, at the same length. So:
- A women's D is about two steps, or roughly 3/8 inch (about 10 mm), wider than a women's B in the same size.
- A men's 2E is about one to two steps wider than a men's D.
- A men's D in a given size is roughly two steps wider than a women's B in the equivalent foot length.
Width also scales with length. A size 11 D is wider in absolute terms than a size 8 D, because a longer foot is generally a wider foot. That's why width letters are always read together with the size number.
These are approximate. Each brand's last, the foot-shaped form a shoe is built on, has its own shape, so one brand's D can feel wider than another's.
Men's D: what it means in practice
For men, D is the default. If a men's shoe doesn't list a width, it's almost always a D. Most men fit a D in most styles, which is why it's the width stores stock most.
Signs a man needs wider than D:
- The sides of the shoe press on the little toe or the joint behind the big toe.
- The upper bulges over the sole at the widest point.
- The shoe feels fine in length but pinches across the ball.
If that's you, look for 2E (EE), sometimes sold as "wide", and then 4E for extra wide. Our guide to what EE, 2E and 4E mean covers the wide end in detail.
Signs a man needs narrower than D: the heel slips, the laces pull right together with the eyelets almost touching, or the foot slides side to side. Look for B or 2A widths, which fewer brands offer.
Women's D: what it means in practice
For women, D is a wide fit. A women's shoe with no width listed is almost always a B (medium). If B shoes feel tight across the ball, rub on the sides, or leave red marks at the end of the day, a D is the next width to try.
Some women's brands label their wide width as C/D or simply W. They usually mean the same thing: about two steps wider than B.
If a women's D is still too narrow, look for 2E (sometimes labelled XW or extra wide).
Our best shoes for wide feet guide covers styles and shapes that suit wide feet.
Men's D vs women's D in unisex shoes
Many sneakers and some boots are sold in a single unisex sizing, often based on men's sizes and a men's D width. If you're a woman buying a unisex or men's shoe:
- Convert your size: a women's size is usually about 1½ sizes larger than the men's size for the same foot length. A women's 9 is roughly a men's 7½.
- Expect it to feel wider than your usual women's B. A men's D is cut wider relative to length than a women's medium.
That's good news if you have wide feet, and a problem if you have narrow feet. Our women's to men's shoe size conversion has the full chart.
How to measure your foot width
You can do this at home with a sheet of paper, a pen and a ruler.
- Measure late in the day. Feet swell during the day, and that's when you'll be wearing your shoes.
- Stand on the paper with your full weight on the foot, wearing the socks you'd wear with the shoes.
- Trace around your foot, holding the pen upright.
- Measure the length from the back of the heel to the tip of the longest toe.
- Measure the width across the widest part of the forefoot, the ball of the foot.
- Do both feet and use the larger measurements.
Then compare your length and width with the brand's width chart. Our guides on how to measure foot length and width and how to measure your shoe size without a Brannock device walk through it with photos.
Width outside the US
Other countries handle width differently:
- UK shoes often use width fittings, with F as a common men's standard and G or H as wider. Some UK women's brands use D as standard and E as wide. Check the brand's chart; letters don't line up exactly with US widths.
- EU shoes usually come in one width per model, with the brand describing the fit as narrow, regular or wide.
- Mondopoint (ISO 9407), used for ski boots and some workwear, can mark both foot length and foot width in millimetres, which avoids the letter confusion altogether. See Mondopoint shoe sizing explained.
Width by type of shoe
The same width letter can feel different depending on the style:
| Shoe type | How width tends to feel | Tip |
|---|---|---|
| Running shoes and sneakers | Mesh uppers give a little; many models come in D, 2E and 4E for men and B, D for women | Try wide versions if the upper bulges over the sole |
| Dress shoes (leather) | Firm at first, then mould slightly | Width should be snug, not tight; leather may ease a little with wear |
| Boots | Thicker leather and padding leave less room | Measure with the socks you'll wear; many people need a wider fit than in sneakers |
| Heels and pumps | Pointed toes narrow fast | A wider width helps more than a longer size |
| Sandals | Straps are adjustable, but footbeds have fixed width | Check that your foot doesn't hang over the footbed edge |
| Work and safety boots | Steel or composite toe caps don't stretch | Width must be right from day one |
Brands also differ in how generous their "D" is, so reviews that say "runs narrow" or "runs wide" are worth reading before you buy.
Common width problems and what they mean
| What you notice | What it usually means | What to try |
|---|---|---|
| Pressure on the little toe or the big-toe joint | Too narrow | Next width up (B to D for women, D to 2E for men) |
| Upper bulging over the sole | Too narrow | Next width up |
| Heel slipping, foot sliding sideways | Too wide | Next width down, or a heel grip |
| Laces pulled so the eyelets nearly touch | Too wide, or low-volume foot | Narrower width or a tongue pad |
| Fine in the morning, tight by evening | Normal foot swelling | Measure later in the day; consider the wider width |
| Tight only in one shoe | One foot is bigger | Fit the bigger foot; pad the smaller side |
When a shoe only comes in D
If you love a men's shoe that only comes in D and you're slightly wide or narrow:
- Slightly wide: try going up half a size. You get a little more width and a little more length. It works for some people, but the extra length can cause heel slip.
- Slightly narrow: a thicker insole or a tongue pad takes up some of the volume.
- Leather shoes can often be stretched a little in width by a cobbler. Synthetic uppers usually can't.
If you need more than half a width of adjustment, look for a brand or model that makes your width. It will be more comfortable than any workaround.
Width and foot health
Shoes that are too narrow are linked to discomfort, rubbing, and pressure on the joints of the forefoot. If you have bunions, hammertoes or wide feet, getting the width right matters as much as the length. Our guides on the best shoes for bunions and the best shoes for flat feet cover what to look for. For foot pain that doesn't settle, see a podiatrist.
If you sell shoes online
Width is one of the most common reasons shoes come back, because many shoppers don't know their width at all. On your product pages:
- Say which width each shoe is, even when it's standard: "Men's D (medium)".
- Explain what the letters mean, especially if you sell both men's and women's.
- Say whether a style runs narrow or wide compared with your other shoes.
- Offer wide widths in the sizes where you see width-related returns.
Our size chart best practices for shoe stores covers how to set this up, and Tailor Size Guide can show length and width on every shoe listing.
Frequently asked questions
What does D width mean in men's shoes?
D is the standard medium width for men. If a men's shoe doesn't list a width, it's almost always a D.
What does D width mean in women's shoes?
D is a wide width for women, about two steps wider than the women's standard B (medium). Some brands label it C/D or W.
Is D width wider than B?
Yes. D is about two width steps wider than B, roughly 3/8 of an inch at the same length on the common US scale.
Is D the same as medium?
For men, yes: D is medium. For women, no: medium is B, and D is wide.
What width is wider than D?
For men, 2E (EE) is wide and 4E is extra wide. For women, 2E is usually extra wide.
Can a woman wear a men's D shoe?
Yes, by converting size: a women's size is usually about 1½ sizes larger than the men's size for the same foot. A men's D will feel wider than a women's B, which suits women with wider feet.
Sources and standards
- The Brannock Device CompanyMaker of the standard US foot-measuring device, which measures length and width and maps them to US width letters.
- ISO 9407, Shoe sizes: Mondopoint system of sizing and markingDefines shoe sizing by foot length and foot width in millimetres.
- US shoe width conventionsWomen's B and men's D as standard widths, and roughly 3/16 inch between width steps, are long-standing US footwear conventions; individual lasts vary.
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