Jeans are labelled W (waist) and L (leg length, the inseam) in inches: 32/32 means a 32 in waist and a 32 in inseam. Measuring a pair that already fits is the most reliable: lay them flat, button them and measure straight across the waistband, then double it.
How to use the Jeans Size Calculator
- Sizing
- I am measuring
- Waist (flat jeans: across the waistband)
- Inseam
Results update as you type, and every field accepts the units shown in its menu.
How it works
Choose whether you are measuring your body or a pair of jeans, men’s or women’s sizing, and enter the waist and inseam.
Inputs explained
| Field | What to enter |
|---|---|
| Sizing | Choose one: Men’s, Women’s |
| I am measuring | Choose one: My body, A pair of jeans laid flat |
| Waist (flat jeans: across the waistband) | Units: in, cm |
| Inseam | Units: in, cm |
What each result means
- Waist size (W) = round([Waist (flat jeans: across the waistband)]×[I am measuring]÷0.0254)
- Length (L) = clamp(2×round([Inseam]÷0.0254÷2), 26, 38)
- Men’s EU size = [Waist size (W)] + 16
Example values
How the main result changes when Waist changes and everything else stays at the example values above:
| Waist (flat jeans: across the waistband) (in) | Waist size (W) |
|---|---|
| 16 | 16 |
| 24 | 24 |
| 32 | 32 |
| 40 | 40 |
| 48 | 48 |
| 64 | 64 |
Formula
Waist size = body waist (in) or 2 × flat jeans waist
Length = inseam rounded to the nearest even inch (30 short, 32 regular, 34 long)
Men EU ≈ waist + 16; women US size from the waist chart
Worked example
Inputs: Sizing: Men's; I am measuring: My body; Waist (flat jeans: across the waistband): 32 in; Inseam: 32 in.
Results: Waist size (W) = 32; Length (L) = 32; Leg length = Regular; Men's EU size = 48; Letter size = M; Women's US size = 12.
Frequently asked questions
What does 32/32 mean on jeans?
A 32 in waist and a 32 in inseam.
How do I measure jeans waist size?
Lay the buttoned jeans flat, measure straight across the top of the waistband and double it.
Are jeans sizes the real waist measurement?
Not always. Many brands size generously (vanity sizing), so measure a pair that fits.