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Jacket Size Calculator

Estimate jacket size from chest.

Calculated Output

US jacket size L

Step-by-Step Breakdown

1. Values used:

2. Chest = 42

3. US jacket size = L

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The math behind it

chest: <36 XS, 36–38 S, 38–40 M, 40–43 L, 43–46 XL, >46 XXL.

Suit jacket?

Suit sizing uses chest size + a number (e.g. 42R).