You can measure your chest size with a bra on or off: Just make sure the bra youíre wearing doesnít have any extra padding. Youíll need a tape measurer (or a string and ruler) and maybe a trusty friend or confidant that can help you with the process:
1) To find your band size, place the measuring tape directly beneath your breasts and measure around your rib cage. Make sure itís snug, tight enough that you get an accurate measurement, but you donít want to suffocate yourself. Remember this measurement correlates with the elastic band that goes around your chest, so thereís a little room for stretching, but not much! If the number you get contains a fraction, you can discard the fraction: So, a 32.5 would be a 32.
2) Take that number and add five to it. If your number ends up being an odd number, then round up. For example, you add five to 32 and you get 37, so youíre most likely a 38. Now you know your accurate band size.
3) Next measure around your bustline (the point where your chest is the largest). This is a more loose measurement. You want the measuring tape to fit loosely around your chest without applying any pressure at all. This is your bust size; letís say itís a 41 (for demonstration purposes).
4) Then, subtract the band size from the bust size. For example, the difference between 41 and 38 is three (41-38=3). This number determines your cup size. Generally, with each inch, the cup size goes up a letter:
According to the above chart, a bust size of 41 and a band size of 38 would make a 38C bra size. Itís that easy!
Now that you know your size, all you have to figure out is what color, material or style you want ó and thatís the hard part. Good luck shopping!
(1-inch difference A Cup)
(2-inch difference B Cup)
(3-inch difference C Cup)
(4-inch difference D Cup)
(5-inch difference DD Cup)
(6-inch difference DDD Cup)
(7-inch difference DDDD Cup)
(8-inch difference FF Cup)
(9-inch difference G Cup)
(10-inch difference H Cup)
(11-inch difference I Cup)
(12-inch difference J Cup)
EUROPEAN SIZE CONVERSIONS
Please be aware that European sizing runs slightly smaller than American sizes.
US | UK |FR |EUR |ITA |
Alternative Method #1
Measure around your ribcage, right under your chest (where the breastcrease is). Add 5 inches to an odd number and 4 inches to an even number. This is your band size.
Example Band Size: 33 ¬Ĺ + 5 = 38 ¬Ĺ (between a 38 and 40 band size)
Step# 2 Cup Measurement
Now measure one breast from one end to the other (from the front outer edge of one breast to the other's front outer edge (left to right, not around). Do not measure completely around both breasts. This is your cup size.
Example Cup Size: 9.5" (between a C and a D cup size)
Difference | Cup size
Up to 7"---| A
Up to 8"---| B
Up to 9"---| C
Up to 10"--| D
Up to 11"--| DD
Up to 12"--| DDD/E
Up to 13"--| F
Up to 14"--| FF
Up to 15"--| G
Example Final Result: 38/40 C/D
Alternative Method #2
Measure around your ribcage, right under the bustline. Add 5 inches to an odd number and 4 inches to an even number.
Example Band Sizes: a) Measure is 29"; 29 + 5 = 34; Band = 34 b) Measure is 34"; 34 + 4 = 38; Band = 38
Step# 2 Cup Measurement
Measure over the fullest part of the bust line.
Example Cup Sizes: a) Measure is 36"; 36-34=2 Cup Size is B b) Measure is 41"; 41-38=3 Cup Size is C
1" more than the band size A cup
2" more than the band size B cup
3" more than the band size C cup
4" more than the band size D cup
5" more than the band size DD cup
6" more than the band size DDD/E cup
7" more than the band size F cup
8" more than the band size FF cup
9" more than the band size G cup