The best you can do is to take one of your own well fitting pants, jackets, shirts or the like and make your measurements directly on the garments. In this way it is easier and more precise than doing the measurement on your body.
a = Neck (shirts)
b = Chest
c = Waist
d = Hip
e = Inseam
f = Center back
g = Sleeve
S | M | L | XL | XXL | XXXL | JUMBO | |
Center back (f) | 63 | 64 | 67 | 68 | 70 | 70 | 74 |
Chest (b) | 126 | 128 | 132 | 138 | 139 | 142 | 162 |
Sleeve (g) | 79 | 80 | 83 | 86 | 88 | 91 | ninety two |
Waist (c) | 100-112 | 102-116 | 104-120 | 110-120 | 112-126 | 115-130 | 146-162 |