Trouser sizes: The complete guide to sizes 27 to 52 and M
Trouser sizes are one of the easiest things to get wrong when shopping online. One style is called “W29”, another “EU 38” and a third simply “M” – and yet all three can fit almost identically. After many years of dressing women across every size, we know the confusion almost always comes down to the same thing: the different sizing systems don't measure the same place, and they don't convert quite the same way from brand to brand.
This guide brings together all the sizes you'll most often come across – sizes 27, 28, 29, 30, 32, 34, 52 and M – in one place. You'll find Soyaconcept's own measurement chart, a step-by-step measuring guide, and an explanation of why the same size can behave differently. The goal is for you to order with confidence and avoid returns.
The three sizing systems you'll meet on trousers
Before the numbers make sense, it helps to know what they actually describe. There are three systems, and they're often used interchangeably:
- Inches (W/L): Used mostly for jeans. “W29” means a waist of 29 inches, and any second number (e.g. “L32”) is the inside leg length. Inches measure the actual circumference – not an abstract size.
- EU size: The even numbers – 34, 36, 38, 40 and so on. Used for most trousers in Europe. The number goes up by two for each size step.
- Alpha size (XS–XXL): The letters XS, S, M, L and so on. The broadest system, and therefore the one that varies most between brands.
Because the three systems live side by side, the safest approach is always to start from your waist measurement in centimetres and use Soyaconcept's measurement chart below as the bridge between systems.
Soyaconcept's measurement chart
At Soyaconcept we design clothing for women's shapes, and our sizes are based on actual body measurements. Below you'll find our official measurement chart in two scales. Note that our alpha sizes (XS–XXL) and EU sizes (34–46) are not quite identical – they each follow their own scale, so check which scale is shown on the product you're looking at.
Alpha sizes (XS–XXL)
| Size | Bust (cm) | Waist (cm) | Hip (cm) |
|---|---|---|---|
| XS | 82 | 70 | 90 |
| S | 88 | 76 | 96 |
| M | 94 | 82 | 102 |
| L | 100 | 88 | 108 |
| XL | 106 | 94 | 114 |
| XXL | 112 | 100 | 120 |
EU sizes (34–46)
| Size | Bust (cm) | Waist (cm) | Hip (cm) |
|---|---|---|---|
| 34 | 86 | 74 | 94 |
| 36 | 90 | 78 | 98 |
| 38 | 94 | 82 | 102 |
| 40 | 98 | 86 | 106 |
| 42 | 102 | 90 | 110 |
| 44 | 106 | 94 | 114 |
| 46 | 110 | 98 | 118 |
On every product page you'll also find a size table with that style's specific measurements for each size, so you can compare directly with your own body measurements. Woven qualities can feel closer-fitting than jersey – keep that in mind when choosing your size.
How to convert jean sizes (inches) to our sizes
Jeans are often given in inches (the W number), which describes the waist. Since 1 inch ≈ 2.54 cm, you can convert inches to centimetres and find your size in the chart above via your waist measurement. As a guide:
| Jean size (inches) | Waist (cm) | Approx. EU / alpha at Soyaconcept |
|---|---|---|
| 27 | approx. 68 cm | Around XS (waist 70) |
| 28 | approx. 71 cm | Between XS and S |
| 29 | approx. 74 cm | Around S / EU 34 |
| 30 | approx. 76 cm | Around S (waist 76) |
| 32 | approx. 81 cm | Around M / EU 38 (waist 82) |
| 34 | approx. 86 cm | Around L / EU 40 (waist 86–88) |
The inch conversion is an industry-standard guide, because Soyaconcept states sizes in EU and alpha. You'll always find the precise fit via the waist measurement in our chart and the product page's own size table.
Two sizes that fall outside the range: 52 and M
- Size 52 is not an inch size but an EU size at the larger end of the scale – used mainly for men's trousers and a few women's styles. It sits above our standard chart (which goes up to EU 46 / waist 98 cm) and corresponds to a waist around 92 cm, often labelled XL.
- Size M at Soyaconcept corresponds to a waist of 82 cm and a bust of 94 cm – in line with EU 38 in our chart. Because M is such a broad label across brands, this is exactly where it pays most to check the specific waist measurement.
An important pitfall: EU 34 is not the same as jean size 34
This confuses a lot of people. When a pair of jeans is called “34”, it usually means 34 inches at the waist (approx. 86 cm) – a large size, most often seen in menswear. But when a pair of trousers is called “EU 34”, at our brand it's a small size with a waist of 74 cm. Same number, two very different sizes. So always check whether there's a “W” in front (inches) or whether it's a plain EU size.
How to measure yourself correctly
You'll get it right by knowing your own measurements in centimetres. Use a soft measuring tape and ideally measure directly on the body or over close-fitting clothing.
- Bust: Measure around your bust at the widest point.
- Waist: Measure around your waist at the narrowest point. This is the most important measurement for trousers. The tape should sit snugly without pulling tight.
- Hip: Measure around the widest point of your hips. Important for tailored and close-fitting styles.
- Inside leg (length): Measure from the crotch down to the floor on the inside of the leg.
A good trick if you're unsure: find a pair of trousers in your wardrobe that fit exactly the way you like, and measure the waist flat (then multiply by two). That gives you a reference to compare against.
Why the same size can fit differently
Even when you've measured correctly, two pairs of trousers in the “same” size can feel completely different. That comes down to four things:
- Cut and fit: A slim fit and a wide leg in the same waist sit markedly differently. Loose styles are more forgiving; close-fitting ones demand precision.
- Quality and stretch: Woven qualities feel closer-fitting than jersey. Denim with elastane gives, where a firm, woven fabric does not.
- Brand differences: Two manufacturers can convert EU 38 differently. That's why an individual style's own size guide always beats the general table.
- Waist placement: High-waisted and low-waisted styles are measured at different points on the body, which changes which waist measurement is relevant.
You may find our products fit slightly generously. If you're between two sizes, it's worth checking the product page's size recommendation – e.g. “Runs large, we recommend sizing down”. These recommendations are based on real customer experiences.
Find your trousers
Once you know your waist measurement and have checked the chart, you're ready to choose. You'll find our full range of trousers and jeans for women online, where each style shows the specific size guide for that particular cut. If you have any questions about sizes or fit, you're always welcome to contact us.
Frequently asked questions about trouser sizes
What does size 27 correspond to in trousers?
Size 27 means a waist of 27 inches, corresponding to approx. 68 cm at the waist. At Soyaconcept it sits around XS, where the waist measurement is 70 cm.
What does size 30 correspond to in trousers?
Size 30 corresponds to approx. 76 cm at the waist. That matches Soyaconcept's size S, where the waist measurement is 76 cm.
What does size M correspond to in trousers?
At Soyaconcept, M corresponds to a waist of 82 cm and a bust of 94 cm – in line with EU 38 in our measurement chart.
What does size 52 correspond to in trousers?
Size 52 is a large EU size with a waist around 92 cm. It's used mainly for men's trousers and typically corresponds to XL. It sits above our standard chart, which goes up to EU 46 (waist 98 cm).
Are EU 34 and jean size 34 the same?
No. At Soyaconcept, EU 34 is a small size with a waist of 74 cm, whereas jean size 34 means 34 inches at the waist (approx. 86 cm) – a large size. Always check whether the size is given in inches (W) or as an EU size.
How do I measure my waist for trousers?
Place a soft measuring tape horizontally around the narrowest point of your waist, where you're smallest. It should sit snugly without pulling tight. Note the measurement in centimetres and compare with Soyaconcept's measurement chart.
Why does the same size fit differently from brand to brand?
Because cut, quality, stretch and each manufacturer's conversion vary. Woven qualities feel closer-fitting than jersey. So always use the specific style's size guide rather than just the general size number.
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