Find Your Bra Size
Getting the right size bra is crucial to lock in all the benefits. Grab a tape measure and an unlined bra to see how you measure up in Nike Bras. If you don’t have a tape measure, string and a ruler work too.
First, Measure Your Underbust
Measure around the bra’s bottom band, just under the breast. The tape measure should feel snug. Round up to the closest measurement. If you don’t have a measuring tape, use a string and a ruler. Follow the above instructions. Lay the string on a flat surface and measure with the ruler.
Second, Measure Your Cup
With the tape measure parallel to the floor, lay the tape across the fullest point of your breast. Measure from the center of your chest to where your breast tissue ends on one side (where an underwire should sit). Round up to the closest measurement.
Use the charts below to convert your regular bra size into Nike Sports Bra sizes.
Scroll horizontally to see more sizes on each chart.
XS – 4X
XS (A-C) – 4X (F-G)
|Alpha/Cup Size||XS (A-C)||XS (D-E)||XS (F-G)|
|Band/Cup Size||30A - 30C 32A - 32B||30D - 30E||30F - 30G|
|Alpha/Cup Size||S (A-C)||S (C-E)||S (F-G)|
|Band/Cup Size||34A - 34B 32C||32D - 32E 34C||32F - 32G|
|Alpha/Cup Size||M (A-B)||M (C-E)||M (F-G)|
|Band/Cup Size||36A - 36B||36C 34D - 34E||34F - 34G|
|Alpha/Cup Size||L (A-B)||L (C-E)||L (F-G)|
|Band/Cup Size||38A - 38B||38C 36D - 36E||36F - 36G|
|Alpha/Cup Size||XL (A-B)||XL (C-E)||XL (F-G)|
|Band/Cup Size||40A - 40B||40C 38D - 38E||38F - 38G|
|Alpha/Cup Size||2XL (A-B)||2XL (C-E)||2XL (F-G)|
|Band/Cup Size||42A - 42B||42C 40D - 40E||40F - 40G|
|Alpha/Cup Size||1X (A-B)||1X (C-E)||1X (F-G)|
|Band/Cup Size||44A - 44B||44C 42D - 42E||42F - 42G|
|Alpha/Cup Size||2X (A-B)||2X (C-E)||2X (F-G)|
|Band/Cup Size||46A - 46B||46C 44D - 44E||44F - 44G|
|Alpha/Cup Size||3X (A-B)||3X (C-E)||3X (F-G)|
|Band/Cup Size||48A - 48B||48C 46D - 46E||46F - 46G|
|Alpha/Cup Size||4X (A-B)||4X (C-E)||4X (F-G)|
|Band/Cup Size||50A - 50B||50C 48D - 48E||48F - 48G|
To get the best fit within our Alpha/Cup size range, find your usual size (XS–4X), then find your usual cup size (A–G). For example, if you typically wear a size Medium and are a C cup, the “M (C–E)” should be your perfect size.