Jeans Size Conversion Charts: How to Convert Women’s and Men’s Sizes

There is no single universal jeans conversion chart that works across every brand. The safest way to convert sizes is to start with your body measurements, then check the current chart for the exact brand and product line. Official guides from Madewell, Gap women, Gap men, Wrangler, and Lee all show the same pattern: the number alone is not enough.

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Start with this rule

Use the chart that matches the exact brand, region, and product page you are buying from. Even official brand guides warn that fit can vary by manufacturer, by style, or by the current product page. Madewell says fits may vary by style or personal preference, and Lee says its size-chart measurements vary by style and only apply to the product page being viewed.

How women’s jean numbers usually work

Women’s jeans are often sold as single numbers such as 26, 27, 28, or 29, but those numbers can map to different body-measurement tables and international conversions depending on the brand. Some brands also show numeric US sizes, alpha sizes, and regional conversions on the same chart, as seen on the current Madewell, Gap, and Wrangler guides.

Official women’s conversion examples

Brand	Label	Waist	Hip / Low hip	Published conversion
Madewell	27	28 in	38 in	UK 8, DE 32, FR 36, IT 40
Wrangler	27	27 in	37 in low hip	US 4, EU 36, UK 8
Gap	S / jeans 27-28	27.5-28.5 in	37.25-38.25 in	US 4-6, EU 36-38, UK 8-10

That table is the practical reason generic charts can mislead: a “27” is close across those examples, but it is not presented the same way by every brand.

Official men’s conversion examples

Brand	Label	Waist	Other official mapping
Gap	XS	28-29 in	Women’s 25-26 on Gap’s men-to-women table
Gap	S	30-31 in	Women’s 27-28 on Gap’s men-to-women table
Gap	M	32-34 in	Women’s 29-30 on Gap’s men-to-women table
Lee	32	32.5-33 in	38-38.5 in hips on the current product-page size chart

For men’s jeans, the most common format is waist x inseam in inches, but brands still differ on where they tell you to measure your waist and which cuts sit higher or lower on the body.

Measure your body before you convert

Most official guides agree on the basics, but not on the exact measuring point. Gap’s women’s guide says to measure the natural waist and the fullest part of the hips. Wrangler says to measure the smallest part of the waist and the widest part of the hips and buttocks. Lee says that if you are unsure of your natural waist, measure where your pant waist normally sits.

Body measurements and garment measurements are not the same

This is the mistake that causes most bad online orders. Brand charts often show body measurements, while product descriptions may show garment measurements such as rise, leg opening, or actual inseam. Gap says garment inseams are listed in product descriptions, and Lee says style-page charts only apply to that specific product page. Always check whether you are looking at your body size or the jeans’ finished measurements.

Fit, fabric, and rise change the result

A 28 in rigid high-rise straight jean and a 28 in low-rise stretch skinny jean can feel completely different. Madewell says fit can vary by style or personal preference, and Lee’s style-specific chart reinforces that the same brand may publish different numbers for different cuts. Rise, stretch content, thigh room, and whether the waistband sits at your natural waist or lower all change what size feels right.

Quick shopping checklist

Measure your waist, hips, and inseam before opening any size chart.
Use the brand’s current chart, not a marketplace copy or a generic roundup.
Check whether the chart shows body measurements or garment measurements.
Confirm the region: US, UK, EU, and Japan conversions are not interchangeable.
Read the product page for rise, stretch, and fit notes before deciding between two sizes.
If you are between sizes, compare the exact waist and hip numbers instead of guessing from the label.

Bottom line

The best jeans conversion chart is the brand’s current official one for the exact pair you want. Generic charts are only a starting point. If you want fewer returns and fewer sizing surprises, convert by measurement first, then use the label number second.