Most women spend years—sometimes decades—wearing shoes that don't actually fit. Not because they're shopping wrong. Not because good shoes don't exist. But because the shoe industry has done a poor job of making width accessible, and nobody ever explained the system clearly.

 

This guide changes that. Whether you have narrow feet that slip in standard shoes, wide feet that have never found a heel that doesn't pinch, or you're just trying to understand what those letters next to your size actually mean—this is the complete resource. Bookmark it, share it, come back to it.

 

By the end, you'll know exactly what your width is, how to measure it, what letters to look for, and how to shop for shoes that genuinely fit.

 

Part 1: Understanding the Width System

 

What "Width" Actually Measures

 

Shoe width refers to the measurement across the ball of your foot—the widest part, at the base of your toes. It's a separate measurement from length, and the two don't always scale together. You can have a size 7 foot that's narrow, average, or wide. That's why width sizing exists as its own dimension.

 

When a shoe is built, it's constructed around a last—a foot-shaped mold. Different widths use different lasts, which means a true AA shoe isn't just a B shoe squeezed tighter. The proportions are different throughout. The toe box, the heel cup, the arch placement—all of it is designed for that specific foot shape.

 

The Complete Width Scale for Women

 

Here's every width you'll encounter in women's footwear, from narrowest to widest:

 

Width	Description
AAAA (4A)	Extremely narrow — rare, typically only available in specialty medical or orthopedic footwear
AAA (3A)	Very narrow — uncommon in fashion footwear, found in select specialty brands
AA (2A)	Narrow — the most common narrow width; slimmer than standard in the ball and toe box
A	Slightly narrow — narrower than standard but less so than AA; sometimes found in European sizing
B	Standard — the default width for virtually all women's shoes; fits the "average" foot
C	Slightly wide — uncommon in women's fashion footwear
D	Wide — significantly more room in the ball; a meaningful step up from standard
E (1E)	Extra wide — generous room throughout, including a deeper toe box
EE (2E)	Extra extra wide — substantial additional volume; often needed for swelling or foot conditions
EEEE (4E)	Specialty wide — used primarily in orthopedic and therapeutic footwear

 

The widths you'll encounter most often in women's fashion footwear are AA (narrow), B (standard), D (wide), and EE (extra wide). Most quality brands that offer multiple widths will carry at least these four.

 

How Width Letters Are Written

 

Width notation can look inconsistent across brands, but the rules are simple:

 

• More letters = more extreme (AA is narrower than A; EE is wider than E)
• Numbers and letters are interchangeable: 2A = AA, 2E = EE, 4E = EEEE
• Some brands use N (narrow), M or R (medium/regular), W (wide), XW (extra wide) as shorthand
• European sizing uses different letters — if you're shopping internationally, check the brand's own width chart

 

Women's vs. Men's Width: Why They're Not the Same

 

This is one of the most commonly misunderstood things about shoe widths. The letters are the same, but the actual measurements are different based on gender.

 

A B width in women's shoes is standard. A B width in men's shoes is narrow. A D width in men's shoes is standard. A D width in women's shoes is wide.

 

This matters if you ever shop unisex styles, work footwear, or athletic shoes that blend gender sizing. Always confirm the width is labeled for the correct gender.

 

Part 2: Finding Your Width

 

How to Measure Your Foot Width at Home

 

You don't need a specialty tool to get a good sense of your width. Here's a simple method that works:

 

1. Gather your materials. You need a piece of paper larger than your foot, a pen or pencil, and a ruler.

2. Trace your foot. Stand on the paper with your full weight on the foot you're measuring (this matters—feet spread under load). Trace carefully around the entire outline.

3. Measure the width. Find the widest point of your tracing—typically across the ball of the foot, just below the toes. Measure straight across from one edge to the other.

4. Compare to a width chart. Use your measurement alongside your shoe size to find your width category. Most brands publish width charts on their size guide pages.

5. Measure both feet. It's extremely common to have feet that differ slightly in width (as well as length). Always fit to your wider foot.

 

For the most accurate measurement, visit a specialty shoe store for a Brannock device fitting—the metal tool that measures both length and width simultaneously. If you've never had one, it's worth the fifteen minutes.

 

Width by Shoe Size: General Reference

 

Width measurements (in inches) vary by shoe size—a size 6 narrow foot is physically narrower than a size 10 narrow foot. Here are approximate ball-of-foot measurements for common widths across women's sizes 6–10:

 

Shoe Size	Approximate Width Measurements
Size 6	AA: ~3.1" | B: ~3.4" | D: ~3.8" | EE: ~4.1"
Size 7	AA: ~3.2" | B: ~3.5" | D: ~3.9" | EE: ~4.2"
Size 8	AA: ~3.3" | B: ~3.6" | D: ~4.0" | EE: ~4.3"
Size 9	AA: ~3.4" | B: ~3.7" | D: ~4.1" | EE: ~4.4"
Size 10	AA: ~3.5" | B: ~3.8" | D: ~4.2" | EE: ~4.5"

 

Note: These are general reference figures. Always defer to a brand's specific size chart, as last construction can vary.

 

Signs Your Shoes Are the Wrong Width

 

Most women identify a width problem through symptoms rather than measurements. Here are the most telling signs:

 

Signs your shoes are too narrow:

 

• Toes feel cramped, squeezed, or overlap
• Blisters or calluses on the outer edge of your foot or pinky toe
• Bunions aggravated or worsening over time
• The shoe bulges slightly over the sole along the sides
• You feel pressure across the ball of your foot within an hour of wearing

 

Signs your shoes are too wide:

 

• Heel slips even when the length is correct
• You feel like you're "sloshing around" inside the shoe
• Straps won't stay in place
• You've added insoles just to make the shoe feel snug
• The shoe creases deeply across the toe box when you walk

 

Part 3: Narrow Feet — What You Need to Know

 

What Makes a Foot "Narrow"

 

A narrow foot isn't just a thin foot. It's a foot whose width-to-length ratio is smaller than average. Some women have naturally narrow feet. Others develop a narrower profile as they age. And some women find that certain styles—particularly pointed-toe heels—fit better because the last naturally accommodates a slimmer forefoot.

 

In women's sizing, AA (2A) is the standard narrow width. If you measure into AA territory and have been buying standard B shoes, almost everything about your experience makes sense: the slipping, the extra socks, the insoles, the endless adjustments.

 

How Narrow Shoes Are Built Differently

 

A true narrow shoe isn't just a regular shoe pulled tighter. It's built on a narrower last, which means:

 

• The toe box is shaped to hold a slimmer forefoot without excess space
• The heel cup is proportionally smaller to prevent slipping
• Straps and closures are positioned to work with narrower foot proportions
• The arch placement is calibrated for a narrower foot shape

 

When you wear a true AA shoe after years of wearing B shoes, the difference is immediately apparent. Nothing slips. Nothing gaps. The shoe holds your foot the way it's supposed to.

 

Shop Marmi's Narrow Collection — AA and slim widths in heels, flats, boots, and more.

 

Common Mistakes Narrow-Footed Women Make

 

• Sizing down. Going a half or full size smaller to get a snugger fit shortens the shoe and throws off toe alignment. You need a narrower shoe, not a shorter one.

• Stuffing the toe box. Inserts and tissue can help temporarily but don't change the fundamental mismatch between your foot's width and the shoe's width.

• Giving up on certain styles. Narrow-footed women often assume heels or sandals just "aren't for them." In the right width, they often fit beautifully.

• Assuming it's about brand quality. An expensive shoe in the wrong width still won't fit. Width matters more than price point.

 

Part 4: Wide Feet — What You Need to Know

 

What Makes a Foot "Wide"

 

Wide feet are far more common than the footwear industry has historically accommodated. A foot is considered wide when its width measurement puts it at D or above relative to its length. Wide feet can also mean a deeper foot profile—more volume from the top of the foot to the sole—not just a broader footprint.

 

Wide feet are often accompanied by a wider toe spread, which is actually a sign of good foot health. Toes that have room to splay naturally bear weight more efficiently. The problem isn't wide feet—it's shoes designed without them in mind.

 

How Wide Shoes Are Built Differently

 

A genuine wide-width shoe is built on a wider last with:

 

• A broader toe box that allows the toes to sit naturally without compression
• More volume in the forefoot area, not just more horizontal space
• A heel cup sized proportionally for a wider foot
• Strap placements that sit correctly on a wider forefoot

 

D width adds meaningful room compared to standard B and is a good starting point for women who find standard shoes consistently too tight. EE is the choice when D still feels constrictive, or when foot conditions like bunions or swelling are a factor.

 

Shop Marmi's Wide Collection — D and EE widths in styles that don't look like "wide shoes."

 

Common Mistakes Wide-Footed Women Make

 

• Sizing up. This is the most common one. Sizing up gives more room in the toe box but creates a shoe that's too long—leading to heel slipping, tripping, and toe alignment problems.

• Buying stretchy styles as a workaround. Elastic and stretchy uppers can help in the short term but don't provide real structural support.

• Assuming heels are off-limits. Wide-width heels exist and fit beautifully when built correctly. Don't let years of bad experiences write off an entire category.

• Not accounting for foot swelling. Feet swell throughout the day and in warm weather. If you're right on the edge between D and EE, factor in when you'll be wearing the shoes.

 

Part 5: Shopping for the Right Width

 

Questions to Ask Before You Buy

 

• Is this style available in my width—or only in standard B?
• Does this brand build on a true width-specific last, or is it just labeled wide/narrow?
• Do reviews from women with similar feet mention fit consistency?
• Is the return policy accommodating enough to try a width and exchange if needed?

 

Width Across Different Shoe Types

 

Heels and Pumps

Fit is most critical here because you can't adjust laces or straps. Narrow-footed women often find pointed-toe styles work well due to the tapered last. Wide-footed women should prioritize brands that offer true D or EE lasts in heeled styles—not just "wide toe box" marketing language.

 

Boots

Ankle and calf circumference become additional factors alongside foot width. Wide-width boots need to account for both the foot and the calf. Narrow-footed women may find that standard boots gap around the ankle.

 

Flats and Loafers

Width issues are often most obvious in flats because there's no heel elevation to compensate. A wide-footed woman in a standard flat will often feel her foot pressing against the sides with every step. A narrow-footed woman will have her foot sliding forward constantly.

 

Sandals and Strappy Styles

Strap placement is designed for a specific foot width. On a narrow foot, straps that sit at the ball of the foot in a standard B shoe may fall too far forward or backward. On a wide foot, straps may dig in or bow outward.

 

How to Try Width for the First Time

 

If you've always bought standard B and are trying a different width for the first time, here's what to expect:

 

• It may feel unusual at first, even if it's correct—your feet are used to the wrong fit
• Walk around for at least ten minutes before deciding
• Your toes should feel free but not swimming
• Your heel should stay in place without gripping
• No part of the shoe should create pressure points within the first wear

 

Part 6: Width and Foot Health

 

What Happens When You Wear the Wrong Width Long-Term

 

Wearing the wrong width isn't just uncomfortable—over time, it causes real damage. Too-narrow shoes are the primary cause of bunions, hammertoes, neuromas (nerve pain in the ball of the foot), and chronic blisters. Too-wide shoes cause the foot to slide and grip unnaturally, leading to heel pain, plantar fasciitis, and calluses in unusual locations.

 

The good news: most of these problems improve significantly when you transition to properly fitted footwear. Width is not just a comfort issue—it's a health issue.

 

How Feet Change Width Over Time

 

Your foot width isn't fixed forever. Several factors cause feet to widen or change shape over time:

 

Age: The ligaments and tendons in the foot gradually loosen, allowing the foot to spread. Many women find their feet a half-width wider in their 40s and 50s compared to their 20s.

Pregnancy: Hormonal changes loosen the ligaments in the feet, and weight gain adds pressure. Many women permanently retain a wider foot after pregnancy.

Weight changes: Increased body weight distributes more force across the foot, often causing it to spread wider over time.

Prolonged standing: Women who stand for most of the day often find their feet slightly wider by the end of it—a good reason to measure and shop in the afternoon or evening.

 

Part 7: Marmi's Approach to Width

 

At Marmi, we build in multiple widths because we believe every woman deserves shoes that fit—not shoes that sort of fit. Every width we offer is constructed on a width-specific last. That means a narrow shoe is designed from the ground up for a narrower foot, and a wide shoe is designed from the ground up for a wider foot. Not adjusted. Not stretched. Designed.

 

Our range spans narrow through wide in styles that don't compromise on elegance—because the women who need width options are also the women who want to wear beautiful shoes.

 

• Shop Narrow Widths at Marmi
• Shop Wide Widths at Marmi
• Shop All Widths at Marmi

 

Related Guides

 

• How Do I Know If I Have Narrow Feet?
• How Do I Know If I Have Wide Feet?