these measurements are the sizes I used for all my men's patterns 

40 chestsize 101 cms/40 in		waist size   81 cms/32 in		hip size 106 cms/42 in
42 chestsize 106 cms/42 in		waist size   86 cms/34 in		hip size 111 cms/44 in
44 chestsize 111 cms/44 in		waist size   91 cms/36 in		hip size 116 cms/46 in
46 chestsize 116 cms/46 in		waist size   96 cms/38 in		hip size 121 cms/48 in 
48 chestsize 121 cms/48 in		waist size  101 cms/40 in		hip size 126 cms/50 in


 US		METRIC needle size			st x rows		= needle size (mm)

 0		2     mm				 8 x 12			10
 1		2.5   mm				10 x 14 		8	
 2		2.75  mm				12 x 16			7
 3		3.25  mm				14 x 19			6.5
 4		3.5   mm				16 x 22			6
 5		3.75  mm				18 x 24			5.5
 6		4     mm				20 x 26 		5	
 7		4.5   mm				22 x 29			4.5
 8		5     mm				24 x 32			4					
 9		5.5   mm				26 x 34			3.5
10		6     mm				28 x 37			3					
11		6.5   mm					
13		8     mm					
15		10    mm					
17		12.75 mm					
19		15    mm					

pattern sizes from www.jessica-tromp.nl