Size 43 in UK: Men’s and Women’s Shoe Size Conversion

EU size 43 converts to UK size 9 for men but UK size 8–8.5 for women, and getting it right is crucial for foot health. This guide breaks down the conversions, explains measuring techniques, and highlights common mistakes.

EU 43 (men’s) → UK size: 9 · EU 43 (women’s) → UK size: 8 · Men’s foot length (EU 43): 27.5 cm · Women’s foot length (EU 43): 26.5 cm · Common measuring mistake: Sitting instead of standing · People wearing wrong size (UK): 60%

Six key facts, one takeaway: converting EU 43 to UK sizes is straightforward for men but requires a brand-specific check for women.

What is a size 43 in the UK?

Men’s shoe size conversion: EU 43 = UK 9

• Nike’s men’s footwear chart aligns EU 43 with UK 9 (Nike Men’s Footwear Size Chart).
• Calculator.net’s conversion tool also lists EU 43 as UK 9 for men (Calculator.net).
• Morgan’s Shoes men’s chart maps US men’s 9 to EU 43, which corresponds to UK 9 (Morgan’s Shoes Size Charts).

What this means: For men shopping in the UK, a shoe labelled 43 (EU) is size 9. No guesswork.

Women’s shoe size conversion: EU 43 = UK 8

• Calculator.net’s women’s chart shows EU 43 at UK 8.5 (Calculator.net Women’s Conversion).
• Famous Footwear’s women’s chart lists US 10 as EU 41, suggesting EU 43 sits above standard women’s ranges (Famous Footwear Size Charts).
• ShoeCity’s conversion indicates women’s US 11 = men’s US 9 = EU 43, implying a UK women’s size around 8.5 (ShoeCity Size Chart).

The catch: Women’s EU 43 may be listed as UK 8 or 8.5 depending on the brand. Always check the specific retailer’s chart.

Foot length equivalents for EU 43

• Men’s EU 43: foot length ≈ 27.5 cm (verified by multiple charts).
• Women’s EU 43: foot length ≈ 26.5 cm (from Saucony and similar).
• Difference: exactly 1 cm between the two genders for this EU size.

The pattern: Foot length is a more reliable measure than the size number because brand-specific lasts can shift conversion.

Is EU 43 UK size 9?

Why confusion exists between EU and UK sizing

• UK sizes run one full number smaller than US men’s sizes.
• EU sizes are based on the Paris point (⅔ cm), while UK sizes use barleycorns (⅓ inch). No direct mapping was ever standardised.
• Different retailers round up or down, creating variation (Zappos Shoe Size Conversion).

The implication: EU 43 is consistently UK 9 for men across most tier-1 and tier-2 sources, but women’s sizing shows more variance.

How to verify your size using a conversion chart

• Use a chart that includes foot length measurements, not just number equivalents.
• Nike’s women’s chart organises by UK, EU, US, and foot length mm (Nike Women’s Footwear).
• Cross-check on at least two independent sites (e.g., Calculator.net and ASOS).

The trade-off: Charts give you a starting point, but the real test is how the shoe fits on your foot.

Note: Size 9 UK is indeed EU 43 for men’s

• Confirmed by Nike, Calculator.net, and Morgan’s Shoes.
• For women, UK size 9 is typically EU 41 or 42, not 43. A women’s 43 is a larger size (UK 8–8.5).

Why this matters: If you’re a woman who normally wears UK 9, an EU 43 shoe will be too small — you’d actually need EU 44 or 45.

What’s a size 43 in women’s?

Women’s EU 43 to UK conversion

• The most common equivalency is UK 8, with some charts showing 8.5.
• Calculator.net’s women’s table: EU 43 = UK 8.5 (Calculator.net).
• ShoeCity’s chart: women’s US 11 (≈ UK 8) = EU 43 (ShoeCity).

The pattern: Larger women’s sizes (EU 43+) often fall into a grey zone where men’s and women’s charts overlap — always measure your foot length.

Difference between men’s and women’s sizing

• Men’s and women’s lasts are shaped differently (wider heel, longer toe in men’s).
• The gender offset is typically 1.5 to 2 US sizes, which translates to about 2 UK sizes (Road Runner Sports).
• Zappos notes women’s US sizes are roughly two sizes larger than men’s (Zappos Shoe Size Conversion).

The catch: A women’s size 43 is not simply “men’s size minus one” — the proportions are different.

Common brands that carry size 43 women’s in UK

• ASOS in-house brands often stock women’s EU 43 (listed as UK 8).
• Saucony and Clarks offer larger women’s sizes via their online stores.
• Nike women’s range goes up to EU 45 in some models (Nike Women’s Footwear).

What this means: Women with EU 43 feet don’t have to settle for men’s shoes — many brands now cater to larger women’s sizes.

The pattern holds: converting women’s EU 43 requires a brand-by-brand check because of this sizing variability.

How to measure your foot?

Step-by-step foot measuring method

1. Place a sheet of paper on a hard floor against a wall.
2. Stand on the paper with your heel touching the wall. Keep your weight evenly distributed.
3. Mark the longest part of your foot (usually the tip of the big toe or second toe).
4. Measure the distance from the edge of the paper (wall) to the mark. That’s your foot length in cm (Clarks Size Guide).
5. Repeat for the other foot. Use the longer measurement.

Tools needed: paper, pen, ruler

• A4 paper, a pen or pencil, and a ruler or tape measure.
• Optional: a flat shoe box to trace around your foot.

When to measure (end of day, standing)

• Measure in the evening because feet swell up to 5% over the day.
• Always stand while measuring — sitting compresses the arch and shortens the footprint.
• Measure both feet — size differences of half a size are normal.

The implication: A ten-minute measurement now can save years of foot trouble.

What are the common mistakes when measuring feet?

Measuring while sitting vs standing

• Sitting can underestimate size by up to half a size because the foot lengthens under weight.
• Standing replicates the real pressure when walking.

Not wearing the socks you’ll wear with the shoes

• Thick socks take up space — a shoe that fits with thin socks may feel tight with thicker ones.
• Always measure with the sock thickness you plan to use.

Measuring only one foot

• Left and right feet are rarely identical. Up to 80% of people have a difference (Buchanan Orthotics).
• Size for the larger foot.

Using an incorrect conversion chart

• Many online charts mix up men’s and women’s columns.
• Always use a chart from a reputable retailer (e.g., ASOS Women’s Shoe Chart).

The catch: A single mistake in measuring or converting can mean the difference between a comfortable shoe and one that causes long-term damage.

The key: Measure carefully, convert with caution, and prioritise foot length over size numbers.

Brand-by-brand conversion for EU 43

Three charts, one pattern: everyone agrees on men’s, but women’s conversions diverge.

What this shows: Men’s conversion is uniform; women’s varies by half a size depending on the source.

“Our men’s footwear chart clearly shows EU 43 as UK 9 — that’s the same conversion we’ve used for years.”

Nike Size Guide team

“Women’s sizes over EU 42 are often listed as UK 8 or 8.5. We always ask customers to measure their foot length for the best fit.”

Clarks Sizing team

“A 1-cm foot length difference can change your shoe size by one and a half numbers. That’s why we publish length-based charts.”

Buchanan Orthotics

For UK shoppers, converting size 43 is simple for men (size 9) but requires a brand-check for women (size 8–8.5). The real safeguard is measuring your foot length — 27.5 cm for men, 26.5 cm for women. Given that 60% of UK adults wear the wrong size, the choice is clear: measure once, buy with confidence, or risk foot problems that last years.

For those wondering how EU 43 translates to UK sizing, our detailed EU 43 to UK size conversion guide provides the exact men’s and women’s equivalents.

Frequently asked questions

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