Men's International Size Conversion Chart

Convert men's clothing sizes between US, UK, European, Russian, Japanese, and Korean sizing systems. Covers jackets, blazers, coats, trousers/pants, and dress shirts.

Quick Size Converter

International Conversion Chart for Men's Suit Jackets, Blazers & Coats

USUKEuropeRussiaJapanKoreaS-M-L
303040403280XXS
323242423485XS
343444443690S
363646463895S
3838484840100M
4040505042105M
4242525244110L
4444545446115L
4646565648120XL
4848585850125XXL
5050606052130XXXL

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International Conversion Chart for Men's Pants & Trousers

USEuropean
3046
3248
3450
3652
3854
4056
4258

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International Conversion Chart for Men's Dress Shirts

US (Neck)EnglandEuropeJapanS-XL
14143687S
14.514.53791S
15153897M
15.515.539102M
161641112L
16.516.542117L
171743122XL
17.517.544127XL
181845132XXL

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Use Fashion Diffusion to test silhouettes, styling ideas, and product visuals once you've found your size across every system.

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How to Measure

01

Chest / Bust

Measure around the fullest part of your chest, keeping the tape parallel to the floor. For women, measure across the fullest part of the bust.

02

Waist

Measure at your natural waistline above hip bones, with one finger of ease.

03

Hip

Measure around the fullest part of your hips, about 7–9 inches below the waist.

04

Neck (shirts)

Wrap around the base of the neck. Allow one finger of ease; round to the nearest half-inch.

05

Foot Length

Trace your foot on paper and measure heel to longest toe. Use the larger foot.

06

Height

Stand barefoot against a wall. Measure from the floor to the top of your head.

Shopping Tips

  1. 01Sizing varies between brands — always check the brand's own size guide first.
  2. 02When possible, try garments on in-store for the most accurate fit.
  3. 03For stretch fabrics you may size down; for structured pieces, use your measured size.
  4. 04If your measurements fall between two sizes, consider the garment's cut and fabric stretch before deciding.
  5. 05Keep receipts and tags until you're sure of the fit.
  6. 06Always defer to the brand's own size guide when one is available.

Frequently Asked Questions

Measure your chest circumference in centimeters. EU jacket size ≈ chest in cm ÷ 2. So US 40 (chest ~102 cm) = EU 50.
It is your neck circumference in inches. Measure around the base of your neck and add 0.5 inches for comfort. US 15.5 = EU 39.
No. US/UK trousers use waist inches (e.g. 34). EU trousers use centimeters (EU 50 ≈ 86 cm waist). Check the chart for exact equivalents.