Originally Posted by iammatt
OK, here is the actual answer:
Suit/jacket sizes are 1/2 way around the chest in centimeters.
Pant sizes are 1/2 way around the hips in centimeters.
The waist means nothing. However, since most are either drop six or drop 7, a size 50 suit or pant is 43 or 44 cm 1/2 way around the waist, which equals somewhere just north or south of 34". You can do the math on the other sizes.
European Jacket sizes are not based on the chest but on the shoulder to shoulder distance in cm.
So a 48 suit has
- a 48 jacket that measures 48 cm shoulder to shoulder
- a 48 pants that its half waist measure 42 cm
This pants are labeled "48" because they match the 48 jacket...
But !!! some brands when the trouser is sold as a separate, label the same trousers as 42.... because this is the actual measurement of the half waist in cm... actually then the waist is 2 times this i.e. 84 cm or 33"
most common brands even label the trousers so you know the waist and inseam togheter with the corresponding "suit" size
so a 48 odd trouser would have a label that indicates
48 ( 42 / 82 )
that indicates 42 cm width ( 2 times to give the waist size ) 82 cm inseam...
the shoulder to shoulder measurement is like it is shown in the picture
However different brands have maybe different cuts so the measurements are not allways the same.. I have 48s that are more near to the body and anothers cut wider... even on the same brand...
but the aproximation of substracting 10 for the US size and 16 for the pants size gives good results