A shoe fits correctly when the ball of your foot sits at the widest part of the shoe, right where it bends, with no pinching or spillover; your heel stays locked in place with no slipping; and there's about a thumb's width (3/8–1/2 inch) between your longest toe and the end of the shoe. We start with where the ball of your foot falls, not toe length alone, and use the toe room as a check. For the most accurate fit, try shoes on later in the day, when your feet are at their largest.
Where should the ball of your foot sit in a shoe?
The ball of your foot, the wide, padded joint behind your toes, should sit at the widest part of the shoe, right where the sole bends. That's where we start when choosing your size: heel to ball, not just heel to toe. Toe lengths vary a lot from person to person, so two people with the same overall foot length can have the ball of the foot in different places. Size by toe length alone and the ball can land in front of or behind the shoe's flex point.
When the ball of your foot is in the right place, the shoe bends where your foot bends, the arch support lines up under your arch, and the widest part of the shoe meets the widest part of your foot. When it isn't, the shoe works against you on every step, even if the length looks right. It's also why the size that fits you best can differ from what a heel-to-toe measurement alone suggests.
We measure this on a Brannock device, the metal foot-measuring tool you've probably stood on in a shoe store. Along with heel-to-toe length and width, it has a separate slider that reads your arch length, the distance from your heel to the ball of your foot. That arch-length reading is our starting point for your size. We pair it with a free 3D foot scan, which adds your arch height and where you carry pressure.
How much room should be at the end of a shoe?
Once the ball of your foot is in the right place, check the front: there should be about a thumb's width — roughly 3/8 to 1/2 inch — between your longest toe and the end of the shoe. Your longest toe isn't always your big toe; check the one that reaches farthest. That gap gives your foot room to slide forward slightly as you walk, room for feet to swell over the day, and clearance on downhills so your toes never jam the front of the shoe.
How should a shoe fit across the width?
The widest part of your foot should sit at the widest part of the shoe, held snugly without pinching. No part of your foot should spill over the edge of the sole, and you shouldn't feel pressure across the ball of your foot. Snug is right; tight is not. A shoe that grips the ball of your foot to stay on is too narrow — the right width holds your foot comfortably without squeezing.
What do shoe widths mean? (AA, B, D, 2E, 4E)
Shoe width is shown as a letter, and the same length can come in several widths. Width refers to the girth around the ball of your foot, not just how flat-wide it looks. Each step up in width adds roughly a quarter-inch of room around the foot. Here's how the common US widths line up:
| Fit | Women's width | Men's width |
|---|---|---|
| Narrow | AA (2A) | B |
| Medium / standard | B | D |
| Wide | D | 2E (EE) |
| Extra-wide | 2E (EE) | 4E (EEEE) |
Note that the same letter means different things for men and women — a women's D is a wide, while a men's D is a standard width.
How do I know if I need a wide (or narrow) shoe?
Your feet will usually tell you. Common signs you need a wider width:
- Red pressure marks or indentations on your foot after taking shoes off
- Your foot overhanging the edge of the sole
- Pinching or a squeezed feeling across the ball of your foot
- Numbness, tingling, or your foot "falling asleep"
- Having to buy a longer size just to get width — a sign you need a wider width, not a longer shoe
Signs a shoe may be too wide or narrow in the heel: your heel slips up and down as you walk, or you cinch the laces very tight just to keep the shoe on. If a standard width never feels right, you're likely a candidate for a narrow or wide.
If it's your toes that feel squeezed rather than the ball of your foot, the fix may be a roomier toe box rather than a wider width. See wide toe box shoes.
Do feet change size — should I get re-measured?
Yes. Ligaments loosen and arches settle over time, so feet tend to get longer and wider with age, and can change with pregnancy or weight change. Most people are also slightly different sizes left to right, and should fit to the larger foot. If you can't remember the last time someone measured your feet, there's a good chance you're in the wrong size — it's worth being re-measured every year or two rather than assuming.
Not sure of your size or width?
Get both feet measured free at Karavel in Austin — no appointment needed.
Frequently Asked Questions
How much toe room should a shoe have?
About a thumb's width — roughly 3/8 to 1/2 inch — between your longest toe and the end of the shoe. Your longest toe isn't always your big toe, so check the one that reaches farthest. Treat toe room as a check, not the way to pick your size: your size should put the ball of your foot at the widest part of the shoe.
Where should the ball of your foot be in a shoe?
At the widest part of the shoe, right where the sole bends. We start from your heel-to-ball measurement, not just heel to toe, because that lines up the shoe's flex point, width and arch support with your foot. If the shoe bends well in front of or behind the ball of your foot, it's probably not the right size for you, even if the toe room looks right.
What is a Brannock device?
It's the metal foot-measuring tool you've probably stood on in a shoe store, invented by Charles Brannock in the 1920s. It measures three things: your heel-to-toe length, your width, and your arch length, the distance from your heel to the ball of your foot. Arch length is the reading that places the ball of your foot at the right point in the shoe, and it's where we start when choosing your size.
How should shoes fit across the width?
The widest part of your foot should sit at the widest part of the shoe, held snugly with no pinching and no part of your foot spilling over the edge of the sole. Snug is right; tight is not.
What does 2E or 4E width mean?
They're wide sizes. For men, D is standard, 2E (EE) is wide, and 4E (EEEE) is extra-wide. For women, B is standard, D is wide, and 2E is extra-wide. Each step up adds roughly a quarter-inch of room around the foot.
Should I size up if my shoes feel tight across the width?
No. Sizing up a length only adds toe room and makes the heel slip; it doesn't fix width. If a shoe pinches across the ball of your foot, you need a wider width in your correct size, not a longer shoe.
How do I know my shoe width?
Signs you need a wider width include red pressure marks after wearing, your foot overhanging the sole, pinching at the ball of the foot, or numbness. The most reliable way is to have both feet measured for length and width — a free 3D foot scan does this in about 20 seconds.
Do feet get bigger with age?
Often, yes. Ligaments loosen and arches settle over time, so feet tend to get longer and wider with age, pregnancy, or weight change. It's worth being re-measured every year or two rather than assuming your size.
When is the best time of day to try on shoes?
Later in the day. Feet swell as you walk and stand, so they're at their largest in the afternoon or evening — fitting then avoids buying shoes that feel fine in the morning but tight by nightfall.