Compare the measurements with a jacket that fits you well.

Jackets

Size US Size EU Size Bust (cm) Sleeve (cm) Length (cm) Shoulder (cm)
S 36-38 46-48 110 64 70 47
M 38-40 48-50 116 65 72 49
L 40-42 50-52 122 66 74 51
XL 42-44 52-54 128 67 76 53
XXL 44-46 54-56 136 68 78 55
3XL 46-48 56-58 144 69 80 57
4XL 48-50 58-60 152 70 82 59
5XL 50-52 60-62 160 71 84 61
How to measure
  1. Lay a similar jacket flat before measuring.
  2. Compare chest, shoulder, sleeve and length measurements rather than relying only on the letter size.

Manual measurement may vary slightly.