Shoe Size Converter: EU to UK
Convert European to UK shoe sizes instantly. Complete EU to UK size charts for men's, women's, and kids' footwear with foot length measurements.
EU 42 = UK 8
27.0 cm
10.6 in
Shoe sizes can vary between brands and models. These conversions are based on standard sizing charts. We recommend checking the specific brand's size chart when possible.
How to measure your foot
- Place a piece of paper on a hard floor against a wall.
- Stand on the paper with your heel against the wall.
- Mark the longest point of your foot (usually the big toe or second toe).
- Measure the distance from the wall to the mark in centimeters.
- Measure both feet and use the larger measurement.
Measure your feet at the end of the day when they are at their largest.
Men's EU to UK Shoe Size Chart
| EU Size | UK Size | Foot (cm) | Foot (in) |
|---|---|---|---|
| 35.5 | 3 | 22.0 | 8.7 |
| 36 | 3.5 | 22.5 | 8.9 |
| 36.5 | 4 | 23.0 | 9.1 |
| 37.5 | 4.5 | 23.5 | 9.3 |
| 38 | 5 | 24.0 | 9.4 |
| 38.5 | 5.5 | 24.5 | 9.6 |
| 39 | 6 | 25.0 | 9.8 |
| 40 | 6.5 | 25.5 | 10.0 |
| 40.5 | 7 | 26.0 | 10.2 |
| 41 | 7.5 | 26.5 | 10.4 |
| 42 | 8 | 27.0 | 10.6 |
| 42.5 | 8.5 | 27.5 | 10.8 |
| 43 | 9 | 28.0 | 11.0 |
| 44 | 9.5 | 28.5 | 11.2 |
| 44.5 | 10 | 29.0 | 11.4 |
| 45 | 10.5 | 29.5 | 11.6 |
| 45.5 | 11 | 30.0 | 11.8 |
| 46 | 11.5 | 30.5 | 12.0 |
| 47 | 12 | 31.0 | 12.2 |
| 48.5 | 13 | 31.5 | 12.4 |
| 49.5 | 14 | 32.0 | 12.6 |
EU to UK shoe size converter. European to British shoe size conversion for men, women, and kids.
An EU to UK shoe size converter translates between the European Paris Point system and the British Barleycorn system using foot length as the bridge. It handles the inconsistent offset between these two scales, which varies across the size range because their increments are mathematically incommensurable.
What Is an EU to UK Shoe Size Converter?
EU sizes are built on the Paris point — each full size steps up by exactly two-thirds of a centimeter (about 6.67 mm). UK sizes are built on the barleycorn, one-third of an inch (about 8.47 mm) per size, and the two scales start counting from different zero points. Because the step sizes themselves differ, no clean whole-number rule links an EU size to a UK size, which is exactly why a lookup table beats any subtraction you can do in your head.
That mismatch shows up the moment you line the scales side by side. On the men's chart a 27 cm foot reads as EU 42 and UK 8, but a 25.5 cm foot reads as EU 40 and UK 6.5, while 26.5 cm reads as EU 41 and UK 7.5 — the gap between the two numbers drifts from one row to the next instead of holding a fixed offset. The EU scale also runs unisex (one number describes the same foot length for men and women), whereas the UK system keeps slightly different men's and women's reference points and restarts its numbering at size 1 after children's size 13.
This converter sidesteps the drift entirely. Rather than apply a single rounding formula, it maps each EU size to its real foot length in centimeters and reads the matching UK size straight off manufacturer-grade lookup tables, with separate charts for men, women, and kids so the half sizes line up the way an actual shoe box does.
How to Convert EU Shoe Size to UK (and UK to EU)
Converting between EU and UK shoe sizes requires either a lookup table or a quick-estimate formula. The UK system does not have separate men's and women's scales the way the US system does — UK sizing is traditionally unisex — so the conversion from EU to UK is the same regardless of gender.
To convert EU to UK shoe size:
1. Subtract 33 from the EU size for a rough UK equivalent. EU 42 minus 33 equals UK 9 (actual: UK 8, because the offset varies across the range).
2. For greater accuracy, subtract 33.5 from the EU size. EU 42 minus 33.5 equals 8.5, which rounds to UK 8 — closer to the true conversion.
3. For children's sizes below EU 33, the simple subtraction rule does not work because the UK kids' scale runs from UK 0 up to UK 13 and then restarts at UK 1 Junior. Use foot length in centimeters as the bridge: EU 30 corresponds to about 19.5 cm, which maps to UK 11 on the kids' scale.
To convert UK to EU shoe size:
1. Add 33 to your UK size for a rough EU estimate. UK 8 plus 33 equals EU 41 (actual: EU 42, since the offset is not constant).
2. For better precision, add 34 to the UK size. UK 8 plus 34 equals EU 42, which matches the standard conversion table.
These quick-add rules get you within one size of the correct answer, but they can be off by a half to full size at the edges of the range. The inconsistency exists because one EU size increment (6.67 mm) does not equal one UK size increment (8.47 mm). For precise results, measure your foot length in centimeters and use that as the universal bridge, or use our converter above, which relies on industry-standard lookup tables.
EU to UK Shoe Size Conversion Formula
- = UK shoe size (same scale for men and women)
- = European shoe size in Paris points
The EU and UK systems both derive shoe size from foot length, but use different units and different formulas. The EU system calculates size as:
Where Lcm is foot length in centimeters, and the constant 2 accounts for toe room (approximately 13 mm). Each EU size increment equals one Paris point (6.67 mm).
The UK system calculates size as:
Where Lin is foot length in inches. Each UK size increment equals one barleycorn (8.47 mm), and the constant 23 sets the starting point of the scale.
To convert directly from EU to UK without measuring your foot, you can combine these two formulas. Solving for foot length from the EU formula and substituting into the UK formula gives:
Or equivalently, for a quick approximation:
This simplified rule works well in the middle of the adult range (EU 38 to EU 46) but drifts at the extremes. The factor 0.7874 reflects the ratio between one Paris point and one barleycorn (6.67 mm divided by 8.47 mm equals 0.787), which is why the two systems never align perfectly — their increments are incommensurable. Our converter uses lookup tables cross-referenced with actual foot length measurements for maximum accuracy.
EU to UK Shoe Size Conversion Examples
Buying Birkenstock Sandals in the UK (EU 42)
You see Birkenstock Arizona sandals listed in EU sizing and need the UK equivalent. Birkenstock uses EU sizes exclusively — the brand does not manufacture in UK sizes. On the men's chart an EU 42 corresponds to a foot length of about 27.0 cm (10.6 inches), which converts to UK 8. Birkenstock is notorious for sizing confusion because many retailers publish inaccurate conversion charts. The brand itself recommends sizing by foot length in centimeters rather than converting from UK numbers. If your foot measures 27.0 cm, select EU 42. If it measures 27.5 cm, that is EU 42.5 (UK 8.5), and 28.0 cm is EU 43 (UK 9) — Birkenstocks are designed to fit with about 5 mm of room at the heel and toe for natural foot movement.
Ordering from Zalando to the UK (Women's EU 38)
You normally wear a UK 5.5 in women's shoes and want to buy boots from Zalando, which lists sizes in EU. On the women's chart a UK 5.5 converts to EU 38, corresponding to a foot length of about 24.0 cm (9.4 inches). On Zalando, select EU 38. If the brand runs narrow — common with Italian designers like Geox or French brands like Jonak — consider going up to EU 39 (UK 6), particularly for pointed-toe styles. Zalando offers free returns in most European markets, so ordering two adjacent sizes is a practical strategy when trying a new brand for the first time.
Buying UK School Shoes with EU Sizing (Kids' EU 32)
Your child's school requires black shoes from a UK retailer, but the brand's website shows EU sizes. On the kids' chart an EU 32 corresponds to a foot length of about 19.7 cm, converting to UK 13 — the very top of the children's UK scale. The EU system uses one continuous scale for children and adults, so EU 30 (19.5 cm) is UK 11 and EU 32 (19.7 cm) is UK 13, climbing by whole UK numbers. The UK system then restarts at size 1 after children's size 13, which means a UK 1 junior is a full step larger than a UK 13 child even though the number drops. When in doubt, measuring the child's foot in centimeters eliminates this confusion entirely.
Tips for Accurate EU to UK Shoe Size Conversion
- Use foot length in centimeters as your universal reference. Measure heel to longest toe while standing, in the afternoon when feet are at their largest. This single measurement converts reliably to both EU and UK sizes and eliminates errors from approximate formulas.
- Do not assume that "EU minus 33" works perfectly. This rule gives a rough estimate, but the actual offset varies from 32.5 to 34 across the size range because the EU increment (6.67 mm) and UK increment (8.47 mm) are mathematically incommensurable. Always verify with a lookup table for important purchases.
- European brands like Birkenstock, ECCO, and Gabor use EU sizing natively. The UK size on their label is a retailer conversion, not the manufacturer's specification. When buying these brands, order by the EU size and verify it against your foot length rather than relying on a UK conversion.
- If your UK half size falls between two whole EU sizes, round up to the next EU number. European shoes that are slightly roomy can be adjusted with an insole, but shoes that are too tight will cause discomfort, especially in leather styles that have a break-in period.
- Check whether the brand offers width options. Most European shoes come in a single standard width, while some UK brands (Clarks, Hotter) provide narrow, standard, and wide fittings. If you have wide feet and are buying an EU-sized shoe, go up one full EU size to compensate for the lack of width options.
- For online purchases from European retailers, keep the return policy in mind. Zalando, About You, and many EU-based shops offer free returns. When trying a brand for the first time, ordering two adjacent EU sizes and returning one is often more reliable than guessing the conversion.
Frequently Asked Questions: EU to UK Shoe Size
What is EU 42 in UK shoe size?
EU 42 converts to UK 8 on the men's chart, at a foot length of about 27.0 cm (10.6 inches). UK sizing is traditionally unisex, so the same number usually fits both men and women, though some brands label this as UK 7.5 or 8.5 depending on their last.
What is EU 38 in UK shoe size?
EU 38 converts to UK 5 on the standard (men's/unisex) chart, at a foot length of about 24.0 cm (9.4 inches). On a dedicated women's UK scale the same EU 38 reads as UK 5.5, since women's UK numbers sit about half a size higher for the same foot. EU 38 is one of the most common women's sizes in Europe, so always check whether a retailer lists the unisex UK number or a women's-specific one before ordering.
How do I convert my UK shoe size to EU?
The quickest method is to add 33 to 34 to your UK size. For example, men's UK 8 plus 34 equals EU 42, and UK 5 plus 33 equals EU 38 — both match the chart exactly. This quick-add rule works for most adult sizes but can be off by a half to full size at the edges of the range. For a precise conversion, measure your foot in centimeters, multiply by 1.5, and add 2 to get your EU size. Our converter above handles this automatically using manufacturer-grade lookup tables.
Are EU and UK shoe sizes the same for men and women?
EU sizes are fully unisex — an EU 42 describes the same foot length whether the shoe is for men or women. UK sizes are also traditionally unisex, meaning a UK 8 is a UK 8 regardless of gender. However, in practice some UK retailers have introduced separate women's UK scales (particularly in athletic footwear influenced by the US market), which can create confusion. Always check whether a retailer uses the standard UK scale or a gender-specific variant.
Why is EU to UK shoe size conversion not exact?
The conversion is imprecise because the two systems use different units that do not align mathematically. One EU size increment equals 6.67 mm (a Paris point), while one UK size increment equals 8.47 mm (a barleycorn). Since 6.67 does not divide evenly into 8.47, the gap between equivalent EU and UK sizes shifts across the range. EU 38 maps to UK 5, but EU 40 maps to UK 6.5, and EU 42 maps to UK 8 — the offset is not constant. This is why lookup tables are more accurate than any single formula.
What EU size should I buy if I wear UK 6?
A UK 6 converts to EU 39 on the men's chart, at a foot length of about 25.0 cm (9.8 inches). EU 39 is also a popular women's size in Europe. If the brand runs narrow (common with Italian makers like Geox), try EU 40 as well.
What size Birkenstock should I get based on my UK shoe size?
Birkenstock uses EU sizing exclusively. To find your Birkenstock size from a men's UK size, add roughly 33 to 34 to your UK number: UK 5 equals EU 38, UK 7 equals about EU 40 to 41, and UK 9 equals EU 43. However, Birkenstock strongly recommends sizing by foot length in centimeters rather than converting. Measure your foot and match it to Birkenstock's size chart: for example, a 25.0 cm foot should select EU 39, and a 27.0 cm foot should select EU 42. Birkenstocks should fit with about 5 mm of space at both the heel and toe.
Do European shoes come in half sizes?
Many traditional European brands only offer whole EU sizes (38, 39, 40, 41, etc.), while international athletic brands like Nike, Adidas, and Puma offer half sizes (42.5, 43.5) even in EU sizing. Higher-end European manufacturers such as Gabor and Hotter also produce half sizes for a more precise fit. If your UK size is a half size (such as UK 6.5) and the European brand does not offer EU half sizes, round up to the next whole EU size (EU 40 rather than EU 39.5) for a more comfortable fit.
Key Terms
Paris Point
The unit of measurement in European shoe sizing, equal to two-thirds of a centimeter (6.67 mm). EU shoe sizes are calculated as foot length in cm multiplied by 1.5, plus a constant of 2 for toe room. The system originated in France in the 19th century and is used across continental Europe.
Barleycorn
The unit of measurement in UK (and US) shoe sizing, equal to one-third of an inch (8.47 mm). Each full shoe size increment corresponds to one barleycorn of foot length. The name comes from the medieval English practice of using a grain of barley as a standard unit of length.
Unisex Sizing
A shoe sizing approach where the same number applies to both men and women. The EU system is fully unisex — EU 42 means the same foot length regardless of gender. The UK system is also traditionally unisex, though some modern retailers have introduced separate women's scales influenced by the US market.
Last
A three-dimensional mold shaped like a foot, around which a shoe is constructed. The last determines the shoe's shape, width, and proportions. Different European and UK brands use different lasts, which is why the same EU size can fit differently between Birkenstock, ECCO, and Gabor.
Toe Allowance
The extra space added beyond foot length when determining shoe size. The EU formula includes a constant of 2 Paris points (approximately 13 mm) for toe room. Proper toe allowance prevents cramping and allows natural foot movement during walking.
Width Fitting
A letter or descriptor indicating shoe width. UK brands like Clarks and Hotter label widths as narrow, standard (F for men, D for women), wide (G/H for men, E for women), and extra wide. Most continental European brands offer only a single standard width, which is why sizing up by one EU number is often recommended for wide feet.
Continental Sizing
Another name for the European (EU) shoe sizing system, commonly used by UK retailers to distinguish EU sizes from UK sizes on product labels. When a UK shoe shop lists a 'Continental size' or 'EUR size,' it refers to the Paris Point system used across mainland Europe.
Sources & References
- ISO/TS 19407:2015, "Footwear — Sizing — Conversion of sizing systems" — the international conversion tables these charts descend from. Read the status line on that page: the standard has been WITHDRAWN and not replaced, which is exactly why no shoe conversion anywhere can be authoritative and why every size here is marked approximate.
- The Brannock Device Company — the measuring instrument that defines US shoe sizing in practice. The scale it prints is the one American stores read, and it measures heel-to-toe length, heel-to-ball length and width; this converter only knows the first, which is why a correct length can still be the wrong shoe.
- Shoe size — the reference for what each scale actually counts: the Paris point (⅔ cm) behind EU numbers, the barleycorn (⅓ inch) behind US and UK, Mondopoint in millimetres behind JP and KR, and the different zero points that make UK sit about 0.5–1 size below US.
- NIST SP 811 Appendix B.8 — the exact inch (2.54 cm) that lets a foot measured in centimetres and one measured in inches land on the same row. Nothing else in shoe sizing is exact; this part is.