When you are going to make your own bra, it’s extremely important to find a right cup size. The length of the bra band can easily be adjusted when trying the bra on. Two measurements are needed; under and full bust. Those measurements are interrelated and constitutes your bra size.
We use the European measurement system in our patterns and to make it easier to choose the right size also for you using inches there are size charts in centimetres as well as in inches. Follow the links below.

How To Measure

measuring

1.BAND SIZE
Place the measuring tape firmly on the lower edge of the bra horizontal to the floor. Keep the tape snug, especially because the measuring tape partly overlaps the bra.
Compare your measurement to the size chart below.


Choose your band size
Your actual measurements
1. Your band size
in centimetres in inches EU US/UK
68-72 26 3/4- 28 3/8 70 (27,5") 32
73-77 28 3/4-30 1/4 75 (29,5") 34
78-82 30 3/4-32 1/4 80 (31,5") 36
83-87 32 5/8-34 1/4 85 (33,5") 38
88-92 34 5/8-36 1/4 90 (35,5") 40
93-97 36 5/8-38 1/4 95 (37,5") 42
98-102 38 5/8-40 1/8 100 (39,5") 44
 

Actual measurements are on the left in the chart. On the right there are European band sizes used by us and the corresponding US/UK band sizes widely used by bra manufacturers. They add 4-5" to your actual under bust measurement depending on whether it is an even or odd number.

When you are MAKING a bra, you should choose the size based on your actual and accurate measurements and follow your European band size to the next step.

2.CUP SIZE
Measure around your body at the fullest part of your bust; measuring tape horizontal to the floor. Keep the tape in place firmly, but softly.

Now you have two numbers, which lead you to your bra size. Find your full bust measurement in the middle of the numbers at the row corresponding to your band size. And, see the letter above, it’s your cup size!


Bra size chart in centimetres
1. Band size 2.Cup size
EU AA A B C D DD
70 (27,5") 79-83 81-85 83-87 85-89 87-91 89-93
75 (29,5") 84-88 86-90 88-92 90-94 92-96 94-98
80 (31,5") 89-93 91-95 93-97 95-99 97-101 99-103
85 (33,5") 94-98 96-100 98-102 100-104 102-106 104-108
90 (35,5") 99-103 101-105 103-107 105-109 107-111 109-113
95 (37,5")   106-110 108-112 110-114 112-116 114-118
100 (39,5")     113-117 115-119 117-121 119-123
 
EU F G H I J K
70 (27,5") 91-95 93-97 95-99
75 (29,5") 96-100 98-102 100-104 102-106 104-108 106-110
80 (31,5") 101-105 103-107 105-109 107-111 109-113 111-115
85 (33,5") 106-110 108-112 110-114 112-116 114-118 116-120
90 (35,5") 111-115 113-117 115-119 117-121 119-123 121-125
95 (37,5") 116-120 118-122 120-124 122-126 124-128
100 (39,5") 121-125 123-127 125-129 127-131 129-133  
 

Bra size chart in inches
1. Band size 2.Cup size
  AA A B C
27,5" (70) 31 1/8 – 32 5/8 31 7/8 – 33 1/2 32 5/8 – 34 1/4 33 1/2 – 35
29,5" (75) 33 1/8 – 34 5/8 33 7/8 – 35 3/8 34 5/8 – 36 1/4 35 3/8 – 37
31,5" (80) 35 – 36 5/8 35 7/8 – 37 3/8 36 5/8 – 38 1/4 37 3/8 – 39
33,5" (85) 37 – 38 5/8 37 3/4 – 39 3/8 38 5/8 – 40 1/8 39 3/8 – 41
35,5" (90) 39 – 40 1/2 39 3/4 – 41 3/8 40 1/2 – 42 1/8 41 3/8 – 42 7/8
37,5" (95)   41 3/4 – 43 1/4 42 1/2 – 44 1/8 43 1/4 – 44 7/8
39,5" (100)     44 1/2 – 46 45 1/4 – 46 7/8
 
  D DD F G
27,5" (70) 34 1/4 – 35 7/8 35 – 36 5/8 35 7/8 – 37 3/8 36 5/8 – 38 1/4
29,5" (75) 36 1/4 – 37 3/4 37 – 38 5/8 37 3/4 – 39 3/8 38 5/8 – 40 1/8
31,5" (80) 38 1/4 – 39 3/4 39 – 40 1/2 39 3/4 – 41 3/8 40 1/2 – 42 1/8
33,5" (85) 40 1/8 – 41 3/4 41 – 42 1/2 41 3/4 – 43 1/4 42 1/2 – 44 1/8
35,5" (90) 42 1/8 – 43 3/4 42 7/8 – 44 1/2 43 3/4 – 45 1/4 44 1/2 – 46
37,5" (95) 44 1/8 – 45 5/8 44 7/8 – 46 1/2 45 5/8 – 47 1/4 46 1/2 – 48
39,5" (100) 46 – 47 5/8 46 7/8 – 48 3/8 47 5/8 – 49 1/4 48 3/8 – 50
 
  H I J K
27,5" (70)
29,5" (75) 39 3/8 – 41 40 1/8 – 41 3/4 41 – 42 1/2 41 3/4 – 43 1/4
31,5" (80) 41 3/8 – 42 7/8 42 1/8 – 43 3/4 42 7/8 – 44 1/2 43 3/4 – 45 1/4
33,5" (85) 43 1/4 – 44 7/8 44 1/16 – 45 5/8 44 7/8 – 46 1/2 45 5/8 – 47 1/4
35,5" (90) 45 1/4 – 46 7/8 46 1/16 – 47 5/8 46 7/8 – 48 7/16 47 5/8 – 49 1/4
37,5" (95) 47 1/4 – 48 7/8 48 – 49 5/8 48 7/8 – 50 3/8
39,5" (100) 49 1/4 – 50 3/4 50 – 51 5/8 50 3/4 – 52 3/8  
 
Check your cup size with a simple subtraction.

Bust – Under bust = Cup size

Difference (cm)
13 15 17 19 21 23 25 27 29 31
A B C D DD F G H I J

Parallel Bra Sizes (Sister Sizes)

Parallel size refers to bra sizes that have the same cup volume, although the band size changes. If, for instance, you use the bra size 75C and the cup feels the right size but the band is a bit loose, a better size choice would be 70D. In this, the cup volume stays the same, but the band is one size smaller. If, on the other hand, the band feels a little tight but the cup still feels the right size, a better choice would be 80B.

Thus, 70D, 75C, and 80B are parallel sizes to each other.

Other Underwear

For underpants you will need two measurements: the waist and hip measurement. The hip measurement is the most important and the pattern of the panties should be selected on the basis of it. Hip measurement is taken from the widest part of the hip by pulling the measuring tape snug, but not too tight.

mB underwear size chart
S M L XL
cm in cm in cm in cm in
BUST 80-84 31 1/2-33 88-92 34 1/2-36 96-100 38-39 1/2 104-110 41-43
WAIST 64-68 25-27 72-76 28-30 80-84 31 1/2-33 88-92 34 1/2-37
HIP 88-92 34 1/2-36 96-100 38-39 1/2 104-108 41-42 1/2 112-118 44-46 1/2