What is my Boggi Milano size in US sizing?
Fact-checked 2026-09-29 · every claim links to its source below
What Boggi publishes
- The clearest EU↔US conversion in this research: XS = EU 44 = US 34, M = EU 48 = US 38, L = EU 50 = US 40, and on to XXXXL = EU 66 = US 56. The rule EU = US + 10 holds in every row.1
- The alpha label is ambiguous and the EU number is the real size: two alpha labels run onto two EU numbers each in the middle of the range — L/XL = 52, XXL/XXXL = 58. Buying Boggi tailoring by letter is how people end up a size out.1
- The Milano blazer chart publishes garment measurements in centimetres per EU size — mid-back length, shoulder width, half waistline and sleeve length — which is a rarity worth crediting. At EU 48: back 73–75, shoulder 44.8–46.8, half waistline 49–51, sleeve 63–65.1
- "Half waistline" means half the circumference. EU 48's 49–51 cm doubles to a 98–102 cm (38.5–40") garment waist on a jacket sold as a 38" chest. Read as a full circumference it looks absurdly small — a classic misreading of an Italian chart.1
- Grading runs about 1 cm of back length and 1.2 cm of shoulder per EU size while the sleeve grows only about 0.8 cm, so bigger Boggi sizes get broader before they get longer.1
- Shirts are sized alpha with a collar range per size: XS 13–13.5", S 14–14.5", M 15–15.5", L 16–16.5", XL 17–17.5", 2XL 18–18.5", 3XL 19–19.5". Each size covers a 1-inch band, roughly half the collar granularity of Charles Tyrwhitt or T.M. Lewin, which step every half inch.2
- Boggi's centimetre collar ladder skips 40 exactly as T.M. Lewin's does — the S/M boundary jumps 39 to 41. The gap is not a British quirk; it is structural to mapping a half-inch collar ladder onto whole centimetres, and it recurs at UK and Italian shirtmakers alike.23
- Clothing runs chest 34–52" and waist 28–46"; trousers run from a 27–28" waist (XS) to 48–50" (3XL) with inseams from 31–32" through 37–38". Note that the published inseam grows with the waist, a proportional-grading assumption that will read long on a short, heavy buyer.2
- The conversion table is keyed to your body while the Milano table is the garment, and Boggi publishes both in different places: "Measure around the fullest part of your chest, keeping tape firmly under your armpits".21
- Between-sizes advice, brand-stated: "If your measurements are in between those listed in the size chart, pick the next larger size."1
What buyers report
- No consensus on runs small or large — no reliable buyer aggregation was located for Boggi suiting, so no direction is asserted here.4
- One measured resale listing corroborates the published bands: "SIZE-48 DROP-6 … LENGTH-79cm SHOULDERS-46cm SLEEVES-64cm PIT TO PIT-51cm" sits inside Boggi's own EU 48 shoulder range of 44.8–46.8 cm and sleeve range of 63–65 cm.41
- That listing also carries a "drop 6" label, the standard Italian athletic cut. Boggi's own size pages do not publish drop at all — only third-party listings do, and that absence is a finding.412
| Boggi alpha | EU size | US size | Note |
|---|---|---|---|
| XS | 44 1 | 34 1 | |
| S | 46 1 | 36 1 | |
| M | 48 1 | 38 1 | |
| L | 50 1 | 40 1 | |
| L/XL | 52 1 | 42 1 | Alpha label ambiguous here 1 |
| XL | 54 1 | 44 1 | |
| XXL/XXXL | 58 1 | 48 1 | Alpha label ambiguous here 1 |
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Questions people ask
What is a Boggi EU 50 in US sizing?
A US 40. Boggi publishes EU = US + 10 across the whole range, 44–66 against 34–56, with no exceptions 1.
Should I buy Boggi by the letter or the number?
The number. Two alpha labels map to two EU numbers each in the middle of the range — L/XL both read 52, XXL/XXXL both read 58 1 — so the letter is ambiguous and the EU number is the real size.
Why does the Boggi jacket waist look so small?
Because the column is a half waistline. EU 48's 49–51 cm doubles to a 98–102 cm garment waist 1. Reading it as a full circumference is a classic misreading of an Italian chart.
Why is there no 40 cm collar at Boggi?
The same reason there is none at T.M. Lewin: the half-inch collar ladder rounded to whole centimetres skips 40, so the S/M boundary jumps 39 to 41 23. It is structural, not a brand quirk.
What drop do Boggi suits use?
Boggi does not publish one on its size pages 12. A measured resale listing shows a drop 6 at EU 48, consistent with the standard Italian athletic cut, but that is a single third-party data point 4.
What should I do if I am between Boggi sizes?
Take the larger one: "If your measurements are in between those listed in the size chart, pick the next larger size" 1.
Sources
What Boggi Milano publishes
- Size chart Milano — Boggi Milano, 2026-09-29brand-stated
- Men's clothing size chart — Boggi Milano, 2026-09-29brand-stated
- Size guides — collar ladder — T.M. Lewin, 2026-09-29brand-stated
What buyers and the press report
- Boggi Milano tag — measured listing — Styleforum (single undated listing), 2026-09-29third-party