How to measure sweatpants
Every point, drawn on the garment so there is no guessing where the tape goes.
Quick answer
Lay the sweatpants flat and measure nine points: waist, inseam, hip, front rise, back rise, length, thigh, knee and hem, in fit-impact order. Waist leads, taken across the relaxed waistband, the number most listings skip. Tap each step on the diagram to see where the tape sits. Sizely turns those numbers into a size chart buyers trust.
A shopper sizing sweatpants reads the waist first, then the inseam to picture where the cuff lands, and there are nine points to cover. Generic guides stop at three. Sweatpants share the same waistband, rise and inseam logic as jeans, so this page draws every point on the actual garment and splits the rise front and back where soft, elastic waists pull differently.
- A
Waist
Across the top of the waistband with the elastic relaxed, not stretched out. Tap this step to see the exact line. On a drawstring or ribbed waist, let it settle first so the figure matches the pair the buyer gets.Double it for the full relaxed waist circumference.
- B
Inseam
Down the inner leg seam from the crotch point to the bottom hem. Tap the step to see where it begins and ends. Inseam sets the leg length, so a buyer knows whether the cuff hits the ankle or pools.Recorded as-is. Do not double.
- C
Hip
Across the widest part of the seat with the pants flat. This sets how roomy they sit through the seat and upper thigh.Double it for the full hip circumference.
- D
Front Rise
From the crotch seam up to the top of the front waistband. Tap the step for the line. The front rise decides where the waistband sits on the body, high or low.Recorded as-is. Do not double.
- E
Back rise
From the crotch seam up to the top of the back waistband. Sweatpants often cut the back higher than the front for coverage when seated, so it is worth listing on its own.Recorded as-is. Do not double.
- F
Length
The full outside run from the top of the waistband to the hem. Read alongside the inseam so a buyer can place where the leg ends on them.Recorded as-is. Do not double.
- G
Thigh
Across the leg at its widest, just under the crotch, with the fabric flat. This is what separates a slim jogger from a relaxed sweatpant.Double it for the full thigh circumference.
- H
Knee
Across the leg at the knee. It shows how the leg tapers from the thigh down toward the cuff.Double it for the full knee circumference.
- I
Hem
Across the leg opening at the bottom. A ribbed or elastic cuff reads narrow; an open straight hem falls wider over the shoe.Double it for the full leg opening.
Measure flat and never stretched. Smooth the sweatpants out and let the elastic waistband relax before the tape touches it, since a pulled waistband reads bigger than the pair a buyer receives. The across measurements, waist, hip, thigh, knee and hem, double to a body circumference; inseam, front rise, back rise and length are single runs recorded as measured.
Sweatpants size reference
| Size | Waist | Inseam | Hip | Front Rise | Thigh |
|---|---|---|---|---|---|
| S | 13 | 30 | 19 | 11 | 11.5 |
| M | 14 | 30.5 | 20.5 | 11.5 | 12.5 |
| L | 15.5 | 31 | 22 | 12 | 13.5 |
| XL | 17 | 31.5 | 23.5 | 12.5 | 14.5 |
| 2XL | 18.5 | 32 | 25 | 13 | 15.5 |
Frequently asked
How do I measure the waist on sweatpants with an elastic band?
Lay them flat and let the waistband relax fully before you measure across the top, edge to edge. Do not stretch the elastic to its limit, since that gives a number bigger than the pair actually wears. Many sellers list both the relaxed waist and the stretched maximum so a buyer sees the comfortable range.
Do I double the waist and thigh on sweatpants?
For the body circumference, yes. Waist, hip, thigh, knee and hem are taken across one flat layer, so the full circumference is about double the flat number. A 14 inch flat waist is roughly a 28 inch waist. Inseam, front rise, back rise and length are single runs, so those flat numbers are already the real ones.
What is the difference between front rise and back rise?
Front rise runs from the crotch seam up to the top of the front waistband; back rise runs from the same seam up to the back. Sweatpants are often cut higher in back for coverage when you sit, so the two differ. Listing both tells a buyer how the waistband will sit, not just how long the rise is overall.
What size sweatpants am I?
Match a relaxed pair you already own to the listing's flat waist and inseam first, since those drive fit and length. Sweatpant sizing runs S to 2XL more often than by waist inches, so the measured numbers matter more than the letter. For the broader US, UK and EU view, see our pants size chart.
Should I list sweatpants in inches or centimeters?
Either works as long as you label the unit and keep it consistent across the listing. Sellers shipping internationally do best showing both, since a buyer in one market thinks in inches and another in centimeters. Sizely lists both on every chart so no buyer has to convert in their head.
Related size charts & tools
Pants sizes (men & women)
Women's international size chartSources: Sizely garment engine, spec #52 (Sweatpants), nine named measurement points. ISO 8559-1 body-measurement definitions (representative ranges only). Last verified June 2026.
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