UK to European Conversion Table
| UK (UK) | European (EU) | Reference Benchmark | Formula Step |
|---|---|---|---|
| 3 UK | 36.75 EU | British junior leather lace-up school shoes | EU = (3 × 1.25) + 33 = 36.75 |
| 3.5 UK | 37.38 EU | Petite English country grain leather chukkas | EU = (3.5 × 1.25) + 33 = 37.38 |
| 4 UK | 38 EU | Handcrafted Northamptonshire leather brogues | EU = (4 × 1.25) + 33 = 38.00 |
| 4.5 UK | 38.63 EU | British equestrian jodhpur & paddock boots | EU = (4.5 × 1.25) + 33 = 38.63 |
| 5 UK | 39.25 EU | Traditional English calfskin penny loafers | EU = (5 × 1.25) + 33 = 39.25 |
| 5.5 UK | 39.88 EU | Benchmade monk strap dress shoes | EU = (5.5 × 1.25) + 33 = 39.88 |
| 6 UK | 40.5 EU | Iconic British suede crepe-sole desert boots | EU = (6 × 1.25) + 33 = 40.50 |
| 6.5 UK | 41.13 EU | Handmade highland ghillie evening brogues | EU = (6.5 × 1.25) + 33 = 41.13 |
| 7 UK | 41.75 EU | English air-cushioned sole combat boots | EU = (7 × 1.25) + 33 = 41.75 |
| 7.5 UK | 42.38 EU | Goodyear-welted wingtip ankle boots | EU = (7.5 × 1.25) + 33 = 42.38 |
| 8 UK | 43 EU | Heavy-tread Scotch grain country walking shoes | EU = (8 × 1.25) + 33 = 43.00 |
| 8.5 UK | 43.63 EU | Waterproof rubber British field wellingtons | EU = (8.5 × 1.25) + 33 = 43.63 |
| 9 UK | 44.25 EU | Northampton cap-toe formal oxford shoes | EU = (9 × 1.25) + 33 = 44.25 |
| 9.5 UK | 44.88 EU | Commando-sole waterproof shooting boots | EU = (9.5 × 1.25) + 33 = 44.88 |
| 10 UK | 45.5 EU | Bespoke Mayfair velvet evening slippers | EU = (10 × 1.25) + 33 = 45.50 |
| 11 UK | 46.75 EU | Extended-size British heritage work boots | EU = (11 × 1.25) + 33 = 46.75 |
UK to European Formula & Unit Definitions
Because 1 barleycorn (8.46 mm) divided by 1 Paris Point (6.67 mm) equals approximately 1.25, each UK size corresponds to 1.25 European sizes. Accounting for the calibrated baseline of UK 0 = EU 33, the mathematical formula is: EU = (UK × 1.25) + 33.
Quick Estimation: Multiply your UK size by 1.25 (or add a quarter of your size) and add 33. For example, UK 8 becomes (8 × 1.25) + 33 = 10 + 33 = EU 43.
UK (UK)
Source Standard- Based on King Edward II's 1324 statute defining three dried barleycorns per inch.
- Graded in increments of 1/3 inch (8.46 mm) for full sizes and 1/6 inch (4.23 mm) for half sizes.
- Default medium width is standard 'F' width for men and 'D' width for women.
European (EU)
Target Standard- Established in Napoleonic France around 1800 using the Paris Point (6.67 mm per size).
- Single continuous numbering system covering children's, women's, and men's footwear.
- Standard Continental lasts incorporate an integrated width profile accommodating wider insteps.
Frequently Asked Questions
Q.How do you convert UK shoe size to EU size?
Multiply your UK size by 1.25 and add 33. For example, a UK 8 converts to (8 × 1.25) + 33 = 43. To convert in the reverse direction, consult our EU to UK shoe converter.
Q.What is the formula for converting UK to EU shoe sizes?
The official formula is EU = (UK × 1.25) + 33. It translates British barleycorns (8.46 mm) into European Paris Points (6.67 mm) using the standard baseline offset.
Q.What is a UK size 9 in European shoe size?
A UK size 9 equals EU 44.25: (9 × 1.25) + 33 = 44.25. Most European footwear brands produce this as EU 44 or recommend rounding to EU 44.5 for wide feet.
Q.Are UK shoes wider than European shoes?
Standard UK medium width ('F' for men, 'D' for women) is broadly comparable to standard European lasts, though British heritage lasts often offer slightly more room across the instep.