Shoe Size Converter: US to EU

Convert shoe sizes between US and EU instantly. Quick reference charts for men's, women's, and kids' sizes with foot length in cm and inches.

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Convert from

Size

US 9 = EU 42.5

Foot length (cm)

27.5 cm

Foot length (in)

10.8 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 US to EU Shoe Size Chart

US Size	EU Size	Foot (cm)	Foot (in)
3.5	35.5	22.0	8.7
4	36	22.5	8.9
4.5	36.5	23.0	9.1
5	37.5	23.5	9.3
5.5	38	24.0	9.4
6	38.5	24.5	9.6
6.5	39	25.0	9.8
7	40	25.5	10.0
7.5	40.5	26.0	10.2
8	41	26.5	10.4
8.5	42	27.0	10.6
9	42.5	27.5	10.8
9.5	43	28.0	11.0
10	44	28.5	11.2
10.5	44.5	29.0	11.4
11	45	29.5	11.6
11.5	45.5	30.0	11.8
12	46	30.5	12.0
13	47	31.0	12.2
14	48.5	31.5	12.4
15	49.5	32.0	12.6

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Aktualizováno: 13. června 2026

US to EU shoe size converter. American to European shoe size conversion for men, women, and kids.

A US to EU shoe size converter translates between the American Brannock system and the European Paris Point system using foot length as the universal bridge. It accounts for the gender-specific US scales, where men's and women's offsets to EU differ, and uses manufacturer-grade lookup tables for precision.

What Is a US to EU Shoe Size Converter?

You found the right shoes on a European webshop — Zalando, ASOS EU, a German brand — at a price that beats your local store. Then the size dropdown lists only EU numbers, and all you know is your US size. Guess wrong and you are paying for return shipping back across the Atlantic. The trap is that US and EU men's sizes sit roughly 33 numbers apart, so a US men's 9 lands near EU 42.5 — not a number you would ever guess by eye.

A US to EU shoe size converter closes that gap. It maps an American size onto the European number that fits the same foot, separately for men, women, and kids, because the US system uses different scales for each while the European number is unisex. A US men's 9 maps to EU 42.5, a US men's 10 maps to EU 44, and a US women's 8 maps to EU 39 — equivalences pulled from a manufacturer-grade lookup table rather than a single rule of thumb, so the half-size jumps line up correctly across the whole range.

The two systems were built differently, which is why the math is not intuitive. The US scale comes from the Brannock Device (1927) and counts foot length in barleycorns — one-third of an inch per size — with separate numbering for men, women, and children. The European scale uses Paris points, where each step is two-thirds of a centimeter (6.67 mm), and is fully unisex: the same EU number describes the same foot length for everyone. That is why an EU 42 reads as US men's 8.5 but US women's 10.5 — one EU number, two different US answers depending on which section you shop. The converter handles this both ways: enter a US size and read the EU equivalent, or enter an EU size and see the US number for men, women, or kids.

How to Convert US Shoe Size to European (and Back)

Converting between US and EU shoe sizes requires knowing the gender category (men, women, or kids) because the US system uses different scales for each, while the EU system is unisex.

To convert US to EU shoe size:

1. For men's shoes, add approximately 33 to your US size. US men's 9 + 33 = EU 42 as a quick estimate, while the lookup table places US men's 9 precisely at EU 42.5 because the offset drifts across the range.

2. For women's shoes, add approximately 31 to your US size. US women's 8 + 31 = EU 39, which matches the table exactly.

3. For kids, the gap is smaller and shifts with age, so the quick-add trick is unreliable. Measure foot length in centimeters instead — a 27.5 cm foot maps to US men's 9, an 18 cm foot to US kids' 10.

To convert EU to US shoe size:

1. For men, subtract approximately 33 from the EU size. EU 44 - 33 = US 11 as an estimate, but the table maps EU 44 to US men's 10 and EU 45 to US men's 11.

2. For women, subtract approximately 31 from the EU size. EU 39 - 31 = US women's 8.

These quick-add rules provide a good approximation, but they can be off by half a size to a full size at the edges of the range. For precise results, the most reliable method is to measure your foot length in centimeters and use that as the bridge between systems. Our converter above uses manufacturer-grade lookup tables rather than rough formulas, ensuring accuracy across the full size range for men, women, and kids.

US to EU Shoe Size Conversion Formula

EU = \frac{3}{2} \times (L_{cm} + 1)

$EU$ = European shoe size in Paris points
$L_{cm}$ = Foot length in centimeters

The European system derives a size from foot length: add about 1 cm of toe room, then multiply by 1.5 to convert centimeters into Paris points (each point is 2/3 cm, so 1.5 points per cm). A 27 cm foot gives 1.5 × 28 = EU 42, which matches the lookup table at that anchor; a 27.5 cm foot gives about EU 42.75, rounding to the EU 42.5 the table assigns to a US men's 9.

The US side has no clean closed-form equivalent. The Brannock system counts foot length in barleycorns (one-third of an inch per size) on separate scales for men, women, and children, and real-world charts fold in a brand-dependent toe allowance that a simple linear formula ignores. That is why the converter above reads from a manufacturer-grade lookup table rather than a US-side equation — the table is authoritative where a single formula would be off by half a size to a full size.

To skip the foot measurement, the quickest direct estimate is a fixed offset:

EU \approx US_{men} + 33 \qquad EU \approx US_{women} + 31

That puts a US men's 9 near EU 42 and a US women's 8 at EU 39. The offset is only an approximation — because the Brannock system (United States, 1927) and the Paris Point system (France, 1800s) were developed independently, they drift by up to a full size at the extremes, which is why a US men's 10 lands on EU 44 rather than the 43 the +33 rule would predict. Industry-standard conversion tables, like the one used in our converter, cross-reference actual foot measurements across both systems for the most accurate mapping.

US to EU Shoe Size Conversion Examples

Ordering Nike Shoes from a European Website (Men's US 9)

You wear a US men's 9 and want to order Nike Air Max from a European retailer like Zalando or Nike.eu. Your US 9 corresponds to a foot length of approximately 27.5 cm (10.8 inches), which converts to EU 42.5. Most European Nike listings will show EU 42.5 as an option. If only whole EU sizes are available, choose EU 43 — going up is always safer than going down. Note that Nike tends to run slightly small, so if you are on the border between US 9 and 9.5, selecting EU 43 is the better call.

Shopping on ASOS for Women's Shoes (US 8)

You wear a US women's 8 and want to buy boots from ASOS, which lists sizes in EU. Your US women's 8 corresponds to a foot length of approximately 25.0 cm (9.8 inches), converting to EU 39. On ASOS, select EU 39. If the brand runs narrow (common with Italian and French designers), consider going up to EU 40, especially for pointed-toe styles. Remember that EU 39 is unisex — it describes the same foot length whether the shoe is marketed to men or women — but the equivalent US men's size for that foot would be US 6.5, not US 8.

Buying European Kids' Shoes Online (US Kids' 10)

Your child wears a US kids' size 10 and you are ordering school shoes from a European brand. US kids' 10 corresponds to a foot length of approximately 18.0 cm, which converts to EU 27. Children's feet grow rapidly — about 1 cm per year between ages 6 and 10 — so many parents order one EU size up (EU 28) to extend the life of the shoe. Unlike the US system, which restarts numbering at youth size 1 after the kids' range tops out at US 13 (EU 32), the EU system uses one continuous scale from infant to adult, making it less confusing for international orders.

Tips for Accurate US to EU Shoe Size Conversion

Measure your foot in centimeters, not inches. Centimeters are the universal bridge between US and EU systems. Measure heel to longest toe while standing, in the afternoon when feet are at their largest.
When your US half size falls between two EU whole sizes, always round up. European shoes that are slightly too large can be adjusted with an insole, but shoes that are too tight will cause blisters and discomfort.
Remember that EU sizes are unisex. A men's EU 42 and a women's EU 42 describe exactly the same foot length. The difference is in the shoe's shape and width, not the size number.
Check the brand's specific size chart before ordering from Europe. Italian brands (Gucci, Prada) tend to run narrow, German brands (Birkenstock, Adidas) run closer to standard, and Nike tends to run about half a size smaller than Adidas.
European shoes typically come in one standard width (medium/D). If you wear wide (W/EE) or narrow (N/AA) in US sizing, look for European brands that explicitly offer width options, or size up by one full EU size for wide feet.
For online orders from European retailers, keep the return policy in mind. Zalando offers free returns across Europe, and many international retailers extend this to US customers. Order two adjacent EU sizes if you are unsure.

Frequently Asked Questions: US to EU Shoe Size

What EU shoe size is a US 9?

A US men's 9 converts to EU 42.5, and a US women's 9 converts to EU 40. The difference exists because the US system uses separate scales for men and women (offset by 1.5 sizes), while the EU system is unisex. If the European retailer does not offer half sizes, a US men's 9 should round up to EU 43.

What is US 10 in European shoe size?

A US men's 10 equals EU 44, and a US women's 10 equals approximately EU 41.5. The US men's 10 corresponds to a foot length of about 28.5 cm (11.2 inches). This is one of the most commonly searched conversions because US 10 is a popular men's size.

Is EU 42 the same for men and women?

Yes. EU 42 describes the same foot length (approximately 27 cm) regardless of gender. The European system is fully unisex — there are no separate men's and women's scales. However, the equivalent US size differs: EU 42 equals US men's 8.5 but US women's 10.5 (a US men's 9 maps to the next half-step, EU 42.5). The physical shoe may also differ in width and shape between men's and women's models, even though the EU size number is the same.

Why is my EU shoe size different from what the formula gives?

The quick-add formulas (add 33 for men, add 31 for women) are approximations that can be off by 0.5 to 1 full size, especially at the extremes of the size range. This happens because the US and EU systems were developed independently using different units (barleycorns vs. Paris points) and do not align perfectly at every increment. Manufacturer-grade conversion tables — like the one our converter uses — are always more accurate than formulas.

Do European shoes come in half sizes?

Some do, but many do not. Traditional European brands use only whole EU sizes (39, 40, 41, etc.), while international athletic brands like Nike, Adidas, and Puma offer half sizes (42.5, 43.5) even in EU sizing. If you normally wear a US half size and the European brand only offers whole sizes, round up to the next whole EU number for a more comfortable fit.

How do I convert kids' US shoe size to EU?

For kids' shoes, a US size 10 converts to approximately EU 27 (foot about 18.0 cm), a US 12 converts to EU 30, and a US 13 — the top of the kids' range — converts to EU 32. The EU system uses one continuous scale from infant to adult, unlike the US system which restarts at 1 after kids' size 13. This makes EU kids' sizing simpler: the numbers just keep going up as the foot grows.

What EU shoe size is a US women's 7.5?

A US women's 7.5 converts to EU 38, with a foot length of approximately 24.0 cm (9.4 inches). EU 38 is one of the most popular women's sizes in Europe. Note: US women's 7 falls between EU 37 and EU 38, so most European brands round up to EU 38 since half-sizes are less common.

Why are US and EU shoe sizes so different?

The US system uses the Brannock Device (invented in 1927) which measures in barleycorns — one-third of an inch per size increment — and assigns separate number scales to men, women, and children. The EU system uses Paris points — two-thirds of a centimeter per increment — and applies one unisex scale to everyone. These systems were created on different continents, in different centuries, using different base units, which is why a simple mathematical conversion does not produce a perfect match at every size.

Key Terms

Brannock Device

The standard foot-measuring tool used in US and Canadian shoe stores since 1927. It measures heel-to-toe length, arch length, and foot width in barleycorn units to determine US shoe size.

Paris Point

The unit of measurement used in European shoe sizing. One Paris point equals two-thirds of a centimeter (6.67 mm). An EU size is the foot length plus about 1 cm of toe room, multiplied by 1.5 to convert centimeters into Paris points.

Barleycorn

The unit of measurement in US and UK shoe sizing, equal to one-third of an inch (8.47 mm). Each full US shoe size increment corresponds to one barleycorn of foot length.

Unisex Sizing

A shoe sizing system where the same size number applies to both men and women. The EU system is unisex — EU 42 means the same foot length regardless of gender. The US system is not: men and women use separate scales offset by 1.5 sizes.

Last

A three-dimensional mold around which a shoe is built. The last determines the shoe's shape, width, and proportions. Different brands use different lasts, which is why the same EU size can fit differently across manufacturers.

Toe Allowance

The extra space added to foot length when calculating shoe size — roughly 1 to 1.5 cm of toe room before the foot length is converted to Paris points. Proper toe allowance prevents cramping and allows natural foot movement.

Width Designation

A letter code indicating shoe width in the US system: N or AA (narrow), B (standard women's), D (standard men's), EE or W (wide), EEEE or WW (extra wide). Most European shoes come in a single standard width without letter designations.

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