Wide-Fit Shoes: Reading Width Letters Across Brands

A width letter is not a measurement. It is a label a brand attaches to a last, the form the shoe is built on, and two brands’ 2E can sit almost a centimetre apart. The letter shows where a shoe sits inside one maker’s range, not how many millimetres you get.

What the letters mean in each scale

North American sizing runs AAA, AA, A, B, C, D, E, EE and EEE, with a longer variant that continues 2E, 3E, 4E, 5E and 6E. For men the standard is D; for women it is B. Those A–E indicators are based on foot width, and the common step between them is 3/16 inch, or 4.8 mm.

The UK uses single letters rather than repeats: C, D, E, F, G, H. F is usually medium, but not always — Edward Green and Crockett & Jones use E as their standard instead.

System	Narrow	Standard	Wide	Extra wide
US men	B, C	D	E, 2E	4E
US women	AA, A	B	D	2E
UK	C, D	F (often E)	G	H

Why a UK fitting is not a US one

The scales were built independently, so conversion tables are approximations. One maker’s E is not necessarily another’s, and the width a given letter covers varies significantly between manufacturers. A chart from the brand you are buying beats a generic table.

The working method follows from that. Find the new brand’s own size page first, take your millimetre measurements from the section below, and read the fitting straight off their table rather than translating from the brand that fit you last year. If the new brand publishes no width chart, its returns policy becomes part of the decision, because a first order is genuinely a fitting experiment and should be treated like one — bought to try, not assumed.

Measuring your own foot in millimetres

Clarks publishes a foot-length table in millimetres and tells you to measure both feet, taking the longest. Width works the same way: measure across the ball of the foot at its widest point while standing, because the foot spreads under load.

Standing is the part people skip, and it is the part that carries the answer. A seated tracing flatters the foot by a few millimetres on each side, which is enough to land you a fitting too narrow — a difference smaller than one width step, invisible in the box and obvious by the end of a working day. Trace on hard flooring, keep the pen vertical, and take the wider foot of the two even if it is the shorter one.

Which brands publish a chart you can use

Clarks’ UK and European fit guides list women’s fittings as D, E and EE and men’s as G and H. The Australian guide adds a narrower C for women and F for men, so the same brand publishes a different letter set depending on which site you read. New Balance is known for D, 2E and 4E, and Brooks and ASICS list wide options too. Most dress and fashion brands publish no width chart at all.

The absence of a chart is information in itself. A maker that publishes no width data is usually selling one last per style, and that last is the standard fitting for its market. Wide-footed buyers then have two honest options: makers whose range is built around width grades, or brands whose charts let you compare millimetres directly. What does not work is ordering the same length size in a different shop and hoping the letter travels — it does not, which is the whole point of this page.

Volume is a different axis from width

A wide shoe can still pinch the top of your foot. Width is side-to-side room; volume is vertical room over the instep, and a last widened for a broad forefoot does not automatically gain a taller instep. Pressure at the sides points to width. Pressure from above — a bulging tongue, laces that will not close — points to volume, which a deeper upper or a different lacing pattern addresses better than another width grade. The same split appears in sneaker width from narrow to wide.

Stretching, sizing up and the half-fixes

A shoe that is one grade too narrow invites three common workarounds, and each buys less than it promises. A cobbler’s stretching can ease a pressure point, particularly at the bunion joint or the little-toe edge, but leather gives in fractions rather than full width grades, and synthetic uppers barely respond at all. Going up a half length size adds width along with length, which is why it seems to work — until the extra length puts the shoe’s flex point ahead of the foot’s flex joint, and the shoe creases where the foot does not bend. Thick socks and heel grips then manage the slack that creates.

None of these is a substitute for the right fitting. They are recovery tools, and recovery has a ceiling well below one width step.

The failure that follows a skipped ball measurement

Width errors announce themselves slowly. A narrow shoe seems fine in a seated fitting because the foot is unloaded; standing spreads it, walking spreads it further, and by the end of the first full day the ball of the foot carries pressure lines and the little toe sits sore. Left alone, the body adapts by changing gait — a shorter stride, a foot turned slightly out — and the shoe gets blamed for being uncomfortable when the real fault was measured in millimetres at the ball.

This is why the standing measurement is not optional. The difference between a fitting that works and one that fails is whether the foot was carrying weight when you measured it.

A checklist for the fitting stool

Stand in both shoes — the pair is fitted to the larger foot, so one shoe is not a trial — and run the points in order. Ball: no side pressure at the widest point, which is where the width letter does its work. Instep: no tongue bulge and no laces that cannot close, which is the volume axis from above. Length: about a thumb’s clearance at the longest toe. Then walk on a hard floor and feel whether the heel lifts.

A shoe that passes seated and fails standing was never tried on properly.

Read loafer last widths before buying a slip-on, and use size conversion for shoes and bags when a listing gives only one scale.