Sports Bra Sizing
Sports Bra Size Guide
Use the chart below to convert your bra size to your New Balance alpha size (XS-XXL) or split alpha size (XS A-C thru XXL D-DD).
Find your alpha size (XS-XXL) using your measurements or bra size.
View Size GuideDon’t know your bra size? Use your measurements instead.
Find your underbust measurement by wrapping a measuring tape underneath your bust where your bra band usually sits. Your underbust measurement will correspond with "Band Size."
Find your overbust measurement by wrapping a measuring tape over your bust at the widest part.
Find your alpha size by matching your band size with your overbust measurement in the chart below.
Underbust Measurement
25"-26"
27"-28"
29"-30"
31"-32"
33"-34"
35"-36"
37"-38"
39"-40"
Band Size
30
32
34
36
38
40
42
44
A
30.3" - 31.1"30AXSXS (A-C)
32.3" - 33.1"32ASS (A-C)
34.3" - 35.0"34ASS (A-C)
36.2" - 37.0"36AMM (A-C)
38.2" - 39.0"38ALL (A-C)
40.2" - 40.9"42AXLXL (A-C)
42.1" - 42.9"42AXLXL (A-C)
44.1" - 44.9"44AXXLXXL (A-C)
B
31.1" - 31.9"30BXSXS (A-C)
33.1" - 33.9"32BSS (A-C)
35" - 35.8"34ESS (A-C)
37.0" - 37.8"36BMM (A-C)
39.0" - 39.8"38BLL (A-C)
40.9" - 41.7"40BXLXL (A-C)
42.9" - 43.7"42BXLXL (A-C)
44.9" - 45.7"44BXXLXXL (A-C)
C
31.9" - 32.7"30CXSXS (A-C)
33.9" - 34.6"32CSS (A-C)
35.8" - 36.6"34CMM (A-C)
37.8" - 38.6"36CLL (A-C)
39.8" - 40.6"38CLL (A-C)
41.7" - 42.5"40CXLXL (A-C)
43.7" - 44.5"42CXLXL (A-C)
45.7" - 46.5"44CXXLXXL (A-C)
D
32.7" - 33.5"30DSS (D-DD)
34.6" - 35.4"32DSS (D-DD)
36.6" - 37.4"34DMM (D-DD)
38.6" - 39.4"36DLL (D-DD)
40.6" - 41.3"38DXLXL (D-DD)
42.5" - 43.3"40DXLXL (D-DD)
44.5" - 45.3"42DXXLXXL (D-DD)
DD
33.5" - 34.3"30DDSS (D-DD)
35.4" - 36.2"32DDMM (D-DD)
37.4" - 38.2"34DDMM (D-DD)
39.4" - 40.2"36DDLL (D-DD)
41.3" - 42.1"38DDXLXL (D-DD)
43.3" - 44.1"40DDXLXL (D-DD)
45.3" - 46.1"42DDXXLXXL (D-DD)