What is a US women's size 8 in UK and EU pant sizes?

A US 8 is a UK 12 and an EU 40 (IT 44, FR 42), with a waist of roughly 28 to 29 inches. The standard offsets are UK = US + 4, EU = US + 32, IT = US + 36 and FR = US + 34. Individual brands drift from these by an inch or more, so when in doubt trust the waist measurement over the number on the label.

What does W30 L32 mean on jeans?

W30 L32 means a 30 inch waist and a 32 inch inseam, the inside leg length from crotch seam to hem. Jeans sized this way skip vanity numbering entirely: the W number is (approximately) the waist in inches, which is why W/L sizing travels between countries so much better than number sizes do.

How do I measure my waist for pants?

Measure where your pants actually sit, which for most modern cuts is just below the navel, not at the narrowest point of your torso. Stand relaxed, keep the tape level and snug but not tight, and breathe normally. The narrowest-point measurement is for dresses and health charts; pants live an inch or two lower, where you are usually a bit bigger.

Why do two brands' size 8 pants fit differently?

Because number sizes are set by each brand, and many brands cut generously so a given number flatters. Two size 8 pairs can differ by two inches at the waist. This is called vanity sizing, it is real, and it is why this converter shows waist inches with every result: the inch is the same in every store.

How do I convert a men's US pant size to EU?

Add about 16 to the waist in inches: a US 32 waist is an EU 48, a 34 is a 50, and so on. That works because EU men's sizes are based on roughly half the chest or seat in centimeters, and the plus 16 shortcut tracks it closely through the common range. For cm-labeled trousers, multiply your waist inches by 2.54.

Is a jeans waist size the same as my actual waist measurement?

Usually close, but not exact. Many jeans labeled W30 measure 31 or even 32 inches flat, because vanity sizing crept into W numbers too. Your true waist measurement is still the right starting point; just expect low-rise cuts to be sized where they sit on the hip, which is larger than your natural waist.

Pant Size Conversion: US, EU, UK and Waist Inches

Pick a mode, enter your size or waist measurement, and get the matching sizes across US, UK, EU, IT and FR systems plus the waist inches behind them. Waist inches are the anchor here, because number sizes drift and inches do not.

Standing in a fitting room in another country, or just another store, wondering what your size even means here: that is the whole reason this page exists. Pant sizing is three different languages (US number sizes, European number sizes, and jeans W/L), and none of them agree with each other, or, honestly, with themselves. The one thing that never lies is the tape measure, which is why every result on this page shows waist inches alongside the converted size.

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The three modes

Women's US size takes a US number size (0 to 20, even numbers) and returns the UK, EU, IT and FR equivalents plus the approximate waist inches behind that size. Jeans W/L takes the waist number from a W/L label, converts it to centimeters, and tells you roughly which women's US size covers that waist. Men's waist converts a men's US waist in inches to the EU size and centimeters.

The formula

UK = US + 4 | EU = US + 32 | IT = US + 36 | FR = US + 34
cm = inches × 2.54 | men's EU ≈ waist inches + 16

US is the women's US number size, UK, EU, IT and FR are the equivalent number sizes in those systems, and waist inches come from the size ladder below rather than a formula, because real charts step unevenly as sizes go up.

Worked example

Say you wear a women's US 8. Add 4 for the UK size: UK 12. Add 32 for the EU size: EU 40 (IT 44, FR 42). On the waist ladder, a US 8 corresponds to about 28 to 29 in at the waist, which is 71 to 74 cm. If a rack in Paris offers you a 42 and it fits like your US 8, the system worked. If it does not, the waist number tells you which direction to move.

How to measure your waist for pants

Measure where your pants actually sit, not where your torso is narrowest. Most modern pants sit at or just below the navel, an inch or two lower than your natural waist, and you are usually a bit bigger there. Stand relaxed, run a soft tape around that line over thin clothing or bare skin, keep it level all the way around, snug but not digging in, and breathe normally. Do it twice; if the numbers disagree, believe the larger one. The narrowest-point measurement belongs to dress charts and health calculators, and using it for pants is the single most common reason an ordered pair does not close.

Women's pant size chart: US, UK, EU, IT, FR and waist

This is the ladder the calculator uses. Waist figures are approximate mid-market values; individual brands drift by an inch or more in either direction.

US	UK	EU	IT	FR	Waist (approx.)
US 0	4	32	36	34	24 to 25 in
US 2	6	34	38	36	25 to 26 in
US 4	8	36	40	38	26 to 27 in
US 6	10	38	42	40	27 to 28 in
US 8	12	40	44	42	28 to 29 in
US 10	14	42	46	44	29 to 30 in
US 12	16	44	48	46	31 to 32 in
US 14	18	46	50	48	33 to 34 in
US 16	20	48	52	50	35 to 36 in
US 18	22	50	54	52	37 to 38 in
US 20	24	52	56	54	40 to 41 in

Jeans W/L, decoded

W/L sizing is the closest thing pants have to an honest system. W is the waist in inches and L is the inseam, the inside leg length from the crotch seam to the hem. So W30 L32 means a 30 inch waist and a 32 inch inside leg: about 76.2 cm around the waist, which lands near a women's US 10 on the ladder above. Because W is (in theory) a real measurement, a W30 in Tokyo, Berlin and Denver should be the same pair of jeans. In practice, some brands cut their W numbers generously too, so a labeled W30 can measure 31 or 32 inches flat. Even so, W/L is far more portable than number sizes, which is why the jeans mode here converts through inches rather than size codes.

About vanity sizing (a straight answer)

Here is the part most size charts will not say plainly. A US 8 today is cut larger than a US 8 from decades past, and two brands' size 8 can differ by as much as two inches at the waist, on purpose. Brands learned that shoppers buy more when the number on the label is smaller, so the numbers drifted down while the garments grew. Nobody is doing anything to you personally, and there is nothing wrong with your body if you are an 8 in one store and a 12 in the next: the labels moved, not you. But it does mean the number is marketing, not measurement. That is why every result on this page anchors to waist inches. The inch has not changed since your grandmother's size 8, and it is the only number in this whole business you can actually trust.

Converting other things too? Try the bra size conversion calculator or the shoe size converter.

Size systems and offsets here follow common mid-market conventions; individual brands vary, sometimes by design. When a purchase matters, check the brand's own chart against your waist measurement.

Pant Size Conversion