Jean sizing, decoded: the five numbers on the tag
Published Oct 12, 2026 · Updated Oct 15, 2026 · By Iris, Pieces & materials editor
Jeans are the garment most people own and least understand. The tag gives two numbers, and the fit depends on five. This note is about the other three.
The five numbers
Waist. The measurement at the waistband. In stretch denim, this number will relax with wear; in rigid denim, it stays put after the first wash.
Hip. Around the fullest part of the seat, usually 8–10 inches below the waist. This is the number that decides whether the jeans sit or pull — and it’s the one most charts omit.
Thigh. Around the fullest part of the upper leg, just below the crotch. If a pair feels tight when you sit, the thigh measurement is the reason — and it’s the one alteration can’t fix.
Rise. From the crotch seam to the top of the waistband. Low rise sits below the hip bone; mid rise at or just below the navel; high rise above it. Rise changes the whole proportion of an outfit, which is why two pairs in the same waist can read completely differently.
Inseam. From the crotch seam to the hem. This is the easiest number to alter (a tailor can shorten it in a day), which makes it the least important number to get exactly right at purchase.
Stretch changes everything
A pair with 2% elastane will feel tight at purchase and relaxed by the end of the day; a rigid pair will feel stiff and then mold to you. The practical rule: buy stretch denim on the snug side, and rigid denim true to the chart. Buying rigid denim snug is how people end up with a pair they can’t sit down in.
Reading the chart honestly
Look for garment measurements (waist laid flat, hip, thigh, rise, inseam) rather than body measurements. Compare them against a pair you already own — measure the waistband laid flat and double it, then measure the rise and inseam. Those three numbers translate across brands far better than the W/L label does.
What we’d pick
The Levi’s 505 Regular Fit Jeans is the baseline: mid rise, straight leg, and sold in a rigid version, so the chart on the tag is the chart you get and nothing moves after the first wash. When the 505 reads too wide through the leg, the Levi’s 512 Slim Taper Jeans runs the same waist with a cleaner line through the thigh and a hem that stops pooling on a boot. And for a pair that gets worn for actual work, the Carhartt Rugged Flex Rigby Dungaree trades the tidy line for a roomier thigh and a fabric that takes a scuff without showing it.
Three pairs, three behaviors. Measure the same five numbers against each before choosing, and the differences stop being mysterious.
Prices and availability move — check the live listing before buying.
The picks
Some links below are affiliate links — we may earn a commission at no extra cost to you.
Levi's 505 Regular Fit Jeans
The baselineA regular fit with a straight leg and a mid rise — the pair that shows you what a standard cut actually feels like before you start adjusting anything. The 505 sits at the waist rather than the hip, which makes it the easiest comparison point for rise. Available in rigid and stretch versions; buy rigid true to the chart and stretch on the snug side.
- + Mid rise reads at level 2 with a knit and a boot
- + Regular fit is the honest baseline for comparing other cuts
- + Widely available, so sizing is easy to verify in person
- – Straight leg can read dated in a slim-cut era
- – Stretch versions relax noticeably by evening
Levi's 512 Slim Taper Jeans
The cleaner lineA slim fit through the thigh with a taper below the knee — the cut that reads sharpest with a boot or a loafer without becoming a skinny jean. The taper is the point: it keeps the hem from pooling, which is why it works at level 3 with a jacket. Check the thigh measurement carefully; slim cuts leave less room there than the waist number suggests.
- + Taper keeps the hem clean over boots and loafers
- + Reads one level dressier than a straight leg
- + Works with knitwear and with a blazer
- – Slim thigh is unforgiving if you're between sizes
- – Less comfortable for long sitting than a regular cut
Carhartt Rugged Flex Rigby Dungaree
The workwear cutA relaxed straight work pant in a cotton-spandex stretch canvas with a gusseted crotch and a reinforced front slash pocket. It's the pair for scenes that involve kneeling, carrying, or sitting on the ground — and the stretch makes the sizing more forgiving than rigid denim. Reads level 1–2 and gets better with wear.
- + Gusseted crotch and stretch handle movement
- + Reinforced pockets survive keys and tools
- + Relaxed fit is forgiving between sizes
- – Reads workwear, not city — wrong for level 3
- – Heavier fabric takes longer to dry
Comparison
How the three cuts divide the work, and what each one asks of your measurements.
| Levi's 505 Regular Fit Jeans | Levi's 512 Slim Taper Jeans | Carhartt Rugged Flex Rigby Dungaree | |
|---|---|---|---|
| Rise | Sits at the waist (11 1/4" front rise) | Sits below the waist (10 3/4" front rise) | Mid |
| Leg | Straight | Slim taper | Relaxed straight |
| Fabric behavior | Rigid or stretch | Mostly stretch | Cotton-spandex stretch canvas |
| Best for | A baseline pair | Level 3 with a jacket | Work and outdoor scenes |
Prices and availability change — the buttons above check the current listing. Last verified October 2026.
Frequently asked questions
- What does W32 L32 actually mean?
- Waist 32 inches, inseam 32 inches — but measured how the brand decides to measure. Some brands use the garment's actual waistband measurement, others use a body waist measurement. That's why two pairs both labeled W32 can differ by an inch or more.
- Why do my jeans stretch out after a day?
- Because most denim contains some elastane, and elastane relaxes with wear. A pair that fits snug at the shop can loosen by half a size by evening. Rigid denim (no elastane) behaves the opposite way — it starts tight and molds to you, and it doesn't spring back after washing.
- Should I buy raw denim in my size or one down?
- With unsanforized raw denim, buy according to the brand's shrink guidance — some shrink a full size in the waist and two inches in the inseam after the first soak. With sanforized raw denim, buy your normal size; it won't shrink meaningfully. Never guess: the brand's shrink note is the only reliable source.