Trouser Size Calculator
Measure round your natural waist and down your inside leg, then choose men's or women's sizing. The calculator gives your trouser size with UK, US and EU equivalents and the leg length to look for.
- Men's W and L
- Women's UK, US, EU
- Short to extra long
Measure over thin clothing, with the tape snug but not tight. Inside leg is from the crotch to the floor without shoes.
Trouser sizes are two numbers: round the waist and down the leg. Men's trousers are usually labelled in inches, such as W32 L32. Women's trousers use dress sizes like UK 12, with a separate short, regular or long leg. Measuring yourself takes a minute and saves a lot of returns.
Trouser size chart
Men's and women's waist sizes. Search for a size.
| Waist (cm) | Waist (in) | Men's W | Men's EU | Women's UK | Women's US | Women's EU |
|---|---|---|---|---|---|---|
| 64 | 25 | – | – | 8 | 4 | 36 |
| 68 | 27 | – | – | 10 | 6 | 38 |
| 73 | 29 | W29 | 44 | 12 | 8 | 40 |
| 78 | 31 | W31 | 46 | 14 | 10 | 42 |
| 83 | 33 | W33 | 48 | 16 | 12 | 44 |
| 88 | 35 | W35 | 50 | 18 | 14 | 46 |
| 93 | 37 | W37 | 52 | 20 | 16 | 48 |
| 98 | 39 | W39 | 54 | 22 | 18 | 50 |
| 102 | 40 | W40 | 56 | – | – | – |
Women's sizes are approximate. High street brands differ by a size or more, so check their own chart before you buy.
Waist and trouser size
Men's and women's. Slide the waist.
Many men buy trousers an inch or two bigger than their true waist. That is vanity sizing in reverse, and a tape measure tells the truth.
How to measure for trousers
Two measurements. Step through it.
Find your waist
The narrowest point, or where you wear trousers.
Jeans often sit lower than suit trousers. Measure where you wear the waistband for the most accurate fit.
Slim, regular or relaxed fit
Same size, different cut. Compare them.
Narrow through the thigh and leg.
Straight leg with room to move.
Generous through the seat and thigh.
Fit changes the thigh and leg width, not the waist. Your waist size stays the same across fits.
Before you buy
Avoid returns. Tick each item.
Tick each item as you go.
Cotton shrinks a little in the first hot wash, often about 2% in length. Allow for that with untreated denim.
What you get
Every size system. Each tile explains one result.
W and L or dress size.
Converted sizes.
cm and inches.
cm and inches.
Short to extra long.
Leg length names: Short under 30 in, Regular 30 to 32, Long 33 to 34, Extra long 35 and over.
Frequently Asked Questions
No question matches that search.
What does W32 L32 mean?
A 32 inch waist and a 32 inch inside leg.
How do I measure my trouser size?
Measure round your waist where the waistband sits, and from crotch to floor for the inside leg.
What is a 34 waist in cm?
About 86 cm.
What is EU size 50 in trousers?
About a 34 inch waist in men's sizing.
What is a UK 12 in women's trousers?
About a 73 cm (29 in) waist. US 8, EU 40.
What leg length is regular?
About 30 to 32 inches (76 to 81 cm).
Should trousers be tight on the waist?
No. You should fit a finger inside the waistband without a belt.
Trousers that fit first time
Measure your waist and inside leg, choose your sizing and get the matching size in every system. Check the brand's chart, pick your fit and you are ready to order.
More size calculators
Each one has its own calculator, worked examples and answers to common questions.