Slacks Size Chart: Professional Fit Sizing Guide
Unlike casual apparel, slacks require precise tailoring around the natural waistline and hips to ensure a clean, professional profile. Use our interactive slacks size calculator and conversion charts to find equivalent sizes for business-casual trousers.
Pants Size Calculator
Enter your measurements — get your US, EU & UK sizes instantly.
Slacks Size Conversion Charts
Men's Slacks Sizing
| US Waist Size | EU Size | UK Size | Waist (Inches) | Waist (cm) |
|---|---|---|---|---|
| US 28 | 38 | 28 | 28" | 71 cm |
| US 29 | 39 | 29 | 29" | 74 cm |
| US 30 | 40 | 30 | 30" | 76 cm |
| US 31 | 41 | 31 | 31" | 79 cm |
| US 32 | 42 | 32 | 32" | 81 cm |
| US 33 | 43 | 33 | 33" | 84 cm |
| US 34 | 44 | 34 | 34" | 86 cm |
| US 36 | 46 | 36 | 36" | 91 cm |
| US 38 | 48 | 38 | 38" | 97 cm |
| US 40 | 50 | 40 | 40" | 102 cm |
| US 42 | 52 | 42 | 42" | 107 cm |
Women's Slacks Sizing
| US Dress Size | EU Size | UK Size | FR Size | IT Size | Waist (Inches) | Hips (Inches) |
|---|---|---|---|---|---|---|
| US 0 | 32 | 4 | 34 | 36 | 24" | 34" |
| US 2 | 34 | 6 | 36 | 38 | 25" | 35" |
| US 4 | 36 | 8 | 38 | 40 | 26" | 36" |
| US 6 | 38 | 10 | 40 | 42 | 27" | 37" |
| US 8 | 40 | 12 | 42 | 44 | 28" | 38" |
| US 10 | 42 | 14 | 44 | 46 | 29–30" | 39–40" |
| US 12 | 44 | 16 | 46 | 48 | 31–32" | 41–42" |
| US 14 | 46 | 18 | 48 | 50 | 33–34" | 43–44" |
| US 16 | 48 | 20 | 50 | 52 | 35–36" | 45–46" |
| US 18 | 50 | 22 | 52 | 54 | 37–38" | 47–48" |
| US 20 | 52 | 24 | 54 | 56 | 39–40" | 49–50" |
Youth Slacks Sizing
| Youth / Kids Size | Age Range | US Adult Equiv. | Waist (Inches) | Inseam (Inches) |
|---|---|---|---|---|
| Size 4 | 3–4 years | — | 20–21" | 16" |
| Size 5 | 4–5 years | — | 21–22" | 17" |
| Size 6 | 5–6 years | — | 22–23" | 18" |
| Size 7 | 6–7 years | — | 23" | 20" |
| Size 8 | 7–8 years | — | 23–24" | 22" |
| Size 10 | 8–9 years | — | 24–25" | 24" |
| Size 12 | 10–11 years | — | 25–26" | 26" |
| Size 14 | 11–12 years | XS | 26–27" | 27" |
| Size 16 | 12–13 years | S | 27–28" | 28" |
| Size 18 | 13–14 years | S/M | 28–29" | 29" |
| Size 20 | 14–15 years | M | 29–30" | 30" |
Frequently Asked Questions
Everything you need to know about sizing.
The first number (32) is your waist measurement in inches. The second number (30) is your inseam — the inside leg length in inches. Always measure in that order: waist × inseam.
Subtract 10 from the EU size to get the US waist size. For example, EU size 42 equals a US size 32. For women's pants, the conversion varies by brand, but EU 38 generally equals US size 8.
A 32-inch waist is a US size 32 in men's pants, a European size 42, and a UK size 32. In women's pants, a 32-inch waist corresponds approximately to a US size 12 or EU size 42.
Men's jeans and pants typically use the same waist-by-inseam sizing (e.g., 32×30). Women's jeans often use a single number (e.g., size 28) that represents the waist in inches, while dress pants use a different US number system (0–20).
A 36-inch waist is a US size 36 in men's pants (EU 46, UK 36). In women's sizing, a 36-inch waist is approximately a US size 16 or EU size 46.
Wrap a soft measuring tape around the narrowest part of your waist, about 1 inch above your belly button. Keep the tape level and snug — not tight. Round to the nearest inch for your pants size.