KayFig Boys Size Chart     
All measurements are in cm
unless otherwise indicated
How to use the chart
Measure the HEIGHT of the child first, find the height on the chart (you may use height in cm or feet and inches), then measure the chest, waist, and hip.  For jackets and vests, you will need chest and waist; for trousers you will need waist and hip.
You will find the size for the child in the left most column.  These are the size notations used in all KayFig patterns and for all children's clothing sold through Originals by Kay, Mrs Vincent's, Morganaside, and P. Palmer Dry Goods
KF Size Aproximate age Height Height in feet and inches Chest Waist Hip Waist to Floor In-seam Nape to Waist Sleeve length Neck
Little Boys                          
B 4 4 104 3'5" 58 54 61 58   25 36 27  
B 4M 4 104 3'5" 64 63 64 58   25.5 36 30  
B 4MM 4 104 3'5" 70 71 70 58   26 36 31  
B 4MMM 4 104 3'5" 76 80 76 58   26.5 36 32  
                         
B 5 5 110 3'7.5" 59 54.5 62.5 62.5   26 38 28  
B 5M 5 110 3'7.5" 66 63.5 66 62.5   26.5 38 30  
B 5MM 5 110 3'7.5" 73 72.5 73 62.5   27 38 32  
B 5MMM 5 110 3'7.5" 80 81.5 80 62.5   27.5 38 34  
                         
B 6 6 116 3'10" 60 55 64 67   27 41 29  
B 6M 6 116 3'10" 68 64 72 67   27.5 41 31  
B 6MM 6 116 3'10" 76 73 80 67   28 41 33  
B 6MMM 6 116 3'10" 86 84 90 67   28.5   35  
                         
B 7 7 122 4' 63 57.5 67 71 46 29 43 30  
B 7M 7 122 4' 71 66 75 71 46 29.5 43 31  
B 7MM 7 122 4' 79 75 83 71 46 30 43 33  
B 7MMM 7 122 4' 89 86 93 71 46 30.5 43 35  
Boy's Size A B 8 8 128 4'2.5" 66 60 70 75.5 50 30 46 30  
B 8M 8 128 4'2.5" 74 69 78 75.5 50 30.5 46 32  
B 8MM 8 128 4'2.5" 82 78 86 75.5 50 31 46 34  
B 8MMM 8 128 4'2.5" 92 89 96 75.5 50 31.5 46 36  
                         
B 9 9 134 4'5" 69 62 73 79.5 61 31 48 31  
B 9M 9 134 4'5" 77 71 81 79.5 61 31.5 48 33  
B 9MM 9 134 4'5" 85 80 89 79.5 61 32 48 35  
B 9MMM 9 134 4'5" 95 91 99 79.5 61 32.5 48 37  
                         
B 10 10 140 4'7" 72 64.5 76 83.5 64.5 33 51 31  
B 10M 10 140 4'7" 80 74 84 83.5 64.5 33.5 51 34  
B 10MM 10 140 4'7" 88 84 92 83.5 64.5 34 51 36  
B 10MMM 10 140 4'7" 98 96 102 83.5 64.5 34.5 51 38  
                         
Boy's Size B B 11 11 146 4'9.5" 75 67 79 87 68 35 53 32  
B 11M 11 146 4'9.5" 83 77 87 87 68 35.5 53 35  
B 11MM 11 146 4'9.5" 91 87 95 87 68 36 53 37  
B 11MMM 11 146 4'9.5" 101 99 105 87 68 36.5 53 39  
                         
B 12 12 152 5' 78 69.5 82 91 71.5 37 55 33  
B 12M 12 152 5' 86 79 90 91 71.5 37.5 55 36  
B 12MM 12 152 5' 94 89 98 91 71.5 38 55 38  
B 12MMM 12 152 5' 104 101 108 91 71.5 38.5 55 40  
                         
B 13 13 158 5'2" 81 72 85 95 74 39 57 34  
B 13M 13 158 5'2" 89 82 93 95 74 39.5 57 36  
B 13MM 13 158 5'2" 97 92 101 95 74 40 57 38  
  B 13MMM 13 158 5'2" 107 104 111 95 74 40.5 57 40  
Boy's Size C B 14 14 164 5'5" 84 74 88 98.5 76.5 41 59 35  
B 14M 14 164 5'5" 92 84 96 98.5 76.5 41.5 59 37  
B 14MM 14 164 5'5" 100 94 104 98.5 76.5 42 59 39  
B 14MMM 14 164 5'5" 110 106 114 98.5 76.5 42.5 59 41  
                         
B 15 15 170 5'7" 87 76.5 91 102.5 79.5 43 61 36  
B 15M 15 170 5'7" 95 86 99 102.5 79.5 43.5 61 38  
B 15MM 15 170 5'7" 103 96 107 102.5 79.5 44 61 40  
B 15MMM 15 170 5'7" 113 108 117 102.5 79.5 44.5 61 42  
                         
B 16 16 176 5'9.5" 90 79 94 106 82 45 63 37  
B 16M 16 176 5'9.5" 98 89 102 106 82 45.5 63 39  
B 16MM 16 176 5'9.5" 106 99 110 106 82 46 63 41  
B 16MMM 16 176 5'9.5" 116 111 120 106 82 46.5 63 43