| # | Name | Units | Chest | Waist | Height | Fit | US/UK | EU | Alpha | Length |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Example A | Imperial | 40 in | 34 in | 70 in | Regular | 40 | 102/2=51 | M/L | Regular |
| 2 | Example B | Imperial | 42 in | 36 in | 73 in | Relaxed | 44 | 107/2=54 | L | Long |
| 3 | Example C | Metric | 96 cm | 84 cm | 175 cm | Slim | 38 | 96/2=48 | M | Regular |
| 4 | Example D | Metric | 104 cm | 100 cm | 168 cm | Relaxed | 42 | 104/2=52 | L | Short |
- Primary size (US/UK):
round_even(chest_in)whereround_even(x) = 2 × round(x ÷ 2). - Fit adjustment: Slim ≈
round_even(chest_in − 1), Regular ≈round_even(chest_in), Relaxed ≈round_even(chest_in + 1). - EU size:
round(chest_cm ÷ 2). - Alpha size: XS 32–34, S 35–37, M 38–40, L 41–43, XL 44–46, XXL 47–49, 3XL 50–52, 4XL 53–55 (chest in inches).
- Length label: Short < 67″, Regular 67–72″, Long 72–75″, Extra‑Long > 75″.
- Drop check (chest − waist): < 4″ suggests fuller mid‑section → consider Relaxed or one size up; ≥ 7″ suggests athletic → Slim may suit.
- Select your units and enter chest and height. Waist and shoulder are optional but improve guidance.
- Choose your preferred fit to tailor the recommendation.
- Click Calculate to get US/UK, EU, alpha size, and length label with notes.
- Use Add to Table to save results. Export with Download CSV or Download PDF.
- Always verify against the brand’s own chart for final purchase decisions.
1) Is this for men’s suit jackets or casual outerwear?
It works for both as a starting point. Suit sizes follow chest more strictly; outerwear may include extra ease depending on brand.
2) How exact is the EU conversion?
EU size is chest in centimeters divided by two and rounded. Some brands round down or up; check the brand chart.
3) What if my shoulders are broad?
If shoulder breadth is large relative to chest, prioritize shoulder fit and consider sizing up even if the chest says otherwise.
4) Why are sizes even numbers?
Traditional men’s suit sizes are even. Some brands offer odd sizes; rounding to the nearest even remains a practical guideline.
5) Do I choose Short Regular or Long?
Use height for a first pass. If your torso or arm length is atypical, prefer the brand’s specific length chart.