US to UK Men's Shoe Size Conversion
| US | UK |
|---|---|
| 7 | 6 |
| 7.5 | 6.5 |
| 8 | 7 |
| 8.5 | 7.5 |
| 9 | 8 |
| 9.5 | 8.5 |
| 10 | 9 |
| 10.5 | 9.5 |
| 11 | 10 |
| 11.5 | 10.5 |
| 12 | 11 |
Sizing conventions vary by brand and by cut — this table shows the standard published conversion. Always check the garment's own size chart when one is available. See how these tables are compiled.
A one-size gap, not the two-size gap women's sizing uses
US and UK men's shoe sizes both descend from the barleycorn system (a third of an inch per size), but the two countries anchored their numbering to slightly different reference lasts historically, leaving a one-size gap rather than the two-size gap seen in women's US-to-UK conversion — a US 9 is a UK 8, not a UK 7. Mixing up the men's and women's offset is a common and completely avoidable sizing mistake when someone applies the 'minus two' rule they've heard applies to shoes generally.
Men's dress-shoe demand clusters tightly around a US 9–11, and mainstream UK lines size their production runs to that same bulge in demand — a US 6 or a US 14 is exactly the size a UK brand is least likely to have bothered making in every half-size step, offset arithmetic notwithstanding.
Width sizing survives the UK conversion better than the EU one
Unlike continental Europe, British dress-shoe tradition also uses width fittings (F standard, G and H wide, on some heritage brands), which map reasonably well onto US D/E/EE conventions even though the letters aren't identical — a heritage British shoemaker's G fitting is a genuinely useful signal if you know you wear a US E or EE, in a way that continental European sizing doesn't offer at all.
What still needs checking
Heritage English shoemakers occasionally use older house lasts distinct from the mainstream British high-street proportions this offset assumes, so for a long-established English brand specifically, check its own chart rather than trusting the general 'minus one' shortcut on its own.
Boots behave differently from shoes
The one-size offset described here is calibrated mainly against low dress and casual shoes; British boot sizing, particularly work boots and country boots, sometimes runs a touch differently because boot lasts accommodate a thicker sock and a different ankle-volume assumption than a dress shoe last does. If you're converting a boot rather than a low shoe, check the specific boot line's chart rather than assuming the standard low-shoe offset transfers directly.
Half-size availability differs between the two markets
US retailers commonly stock half-sizes across a wider range of styles than some UK retailers do for men’s dress shoes specifically, so a converted UK size that lands on a half-size may be harder to find in that exact increment from a UK-only brand.
Frequently asked questions
Is the US-to-UK men's offset the same as the women's offset?
No — men's US-to-UK sizing is generally a one-size gap (US 9 = UK 8), while women's is generally a two-size gap. The two scales anchor to different reference lasts historically, so applying the women's rule to men's shoes gets it wrong.
Do UK width fittings correspond to US width letters?
Roughly, yes — British F/G/H fittings map approximately onto US D/E/EE, which is more useful than continental European sizing, where a single-width-per-size convention gives you nothing to convert a US wide width from.
Is the one-size offset reliable at every point in the range?
For anything a mainstream brand actually manufactures in volume, yes — the offset itself doesn't change at the extremes, it's simply that a US 6 or US 14 falls outside where most UK production runs bother stocking every half-size step.
Do heritage English shoemakers follow the standard UK offset?
Not always — some long-established English brands use older house lasts distinct from mainstream British high-street proportions, so check that maker's own chart rather than relying on the general rule alone.
Does the one-size offset apply to boots the same way it does to dress shoes?
Not necessarily — boot lasts accommodate a thicker sock and different ankle volume than a dress-shoe last, so check the specific boot line's own chart rather than assuming the low-shoe offset transfers directly.