M Size Shirt Chest Size: Medium Shirt in Inches and cm
An M (medium) shirt fits a body chest of about 40 inches (102 cm). The shirt itself usually measures 41 to 45 inches (104 to 114 cm) around the chest, depending on brand and fit. A medium roughly matches a 40 cm (15¾ in) collar. mtsya M fits a 40¼ in body chest, garment 44 in.
An M (medium) shirt fits a body chest of about 40 inches (102 cm). The shirt itself usually measures 41 to 45 inches (104 to 114 cm) around the chest. At mtsya, M fits a 40¼ in (102 cm) body chest and measures 44 in (112 cm) across the garment.
What is the chest size of a medium shirt?
Two numbers matter. Body chest is you, measured with a tape. Garment chest is the shirt, measured flat armpit to armpit and doubled. The gap is ease, the room you need to move and sit.
| mtsya M | Inches | cm |
|---|---|---|
| Body chest (fits) | 40¼ | 102 |
| Garment chest | 44 | 112 |
| Collar (approx.) | 15¾ | 40 |
Medium shirt chest size across brands
| Brand | Fit | M chest (in) |
|---|---|---|
| H&M | slim | 37¾ (body) |
| Mufti | slim | 40 |
| Powerlook | regular | 41 |
| U.S. Polo Assn. | slim | 41½ |
| Jack & Jones | slim | 41.7 |
| Roadster | regular | 42¼ |
| Levi's | slim | 42½ |
| Highlander | slim | 43 |
| Bewakoof | not stated | 43 |
| Zara | regular | 43.3 |
| The Souled Store | relaxed | 44 |
| Andamen | regular | 44.1 |
| Uniqlo | regular | 44.9 |
| Snitch | regular | 45 |
| mtsya | regular | 44 |
Garment chest unless marked body. Each figure is from that brand's published size chart, October 2026 (brand site or its Myntra listing), for one full-sleeve shirt; check the product you buy.
A medium ranges five inches across brands. Mufti's M is what most brands call S; Snitch's M is close to others' L.
What collar size is a medium shirt?
A medium roughly matches a 40 cm (15¾ in) collar, sold as "40" in Indian formal shirts. This follows Andamen's published chart (S 39, M 40, L 42, XL 44, XXL 45). The shirt size conversion chart has UK, US and EU numbers.
Who does a medium shirt fit?
Height and weight are not reliable. Chest and shoulders decide the fit. If your chest measures 39 to 41 inches, start with M, then check the shoulder seam sits on the shoulder bone. See how to measure shirt size.
Between M and L?
If your chest is 41 to 42 inches, or you want room over a T-shirt, take L. If you are nearer 39, see S.
mtsya shirts in size M
Every mtsya shirt is regular fit, cut in one pattern, so M fits the same across Manu White, Deep Water, Deluge and the rest of the collection. Each has the Matsya fish stitched small at the left chest, for the fish that guided Manu's boat through the flood. Size exchange within 7 days of delivery. More help in the size guide.
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Questions, answered
Is a 40 inch chest a medium?
Yes. A 40 inch body chest is a medium at most brands and a collar 40 in formal shirts. mtsya M fits a 40¼ inch body chest and measures 44 inches across the garment.
What is a medium shirt size in cm?
A medium fits a body chest of about 102 cm. The garment usually measures 104 to 114 cm around the chest. mtsya M is 102 cm body chest and 112 cm garment chest.
Is medium size 38 or 40?
In Indian formal sizing, M usually corresponds to 40, and 38 or 39 is closer to S. Brands differ, so compare the chest measurement rather than the label.
Can I choose shirt size by height and weight?
Not reliably. Shirts are sized by chest and shoulders, and men of the same height and weight can have very different chests. Measure with a tape or string.
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Read next:L size shirt chest size ·S size shirt chest size ·How to measure shirt size