Under Armour Men's Shirt Size and Fit Guide

CHEST: Place the tape measure under your arms at the fullest part of your chest, wrap around your body until your fingers meet and mark the measurement.

WAIST: Measure around your natural waistline—right above your hips. Be careful not to squeeze too tight to allow a little give.

  Chest (in) Waist (in)
XS 30 - 32 26.5 - 27.5
S 34 - 36 28 - 29
M 38 - 40 30 - 32
L 42 - 44 34 - 36
XL 46 - 48 38 - 40
XXL 50 - 52 42 - 44
3XL 52 - 54 44 - 46
4XL 54 - 56 46 - 48
5XL 56 - 58 48 - 50
 
  Chest (cm) Waist (cm)
XS 76 - 81 67 - 70
S 86.4 - 91.4 71.1 - 73.7
M 96.5 - 101.6 76.2 - 81.3
L 106.7 - 111.8 86.4 - 91.4
XL 116.8 - 121.9 96.5 - 101.6
XXL 127 - 132.1 106.7 - 111.8
3XL 132.1 - 137.2 111.8 - 116.8
4XL 137.2 - 142.2 116.8 - 121.9
5XL 142.2 - 147.3 121.9 - 127
Measurements are desired standards, some variability may occur.