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
    Second, Measure Your Cup
    Your Nike Bra Size

    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.

    Your Nike Bra Size

    Alpha/Cup Size
    Based on your answers, this is the bra size we think will fit you best.

    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
    Alpha SizeXSSMLXL2XL1X2X3X4X
    Band/Cup Size30A - 30E 32A - 32B32C - 32E 34A - 34C34D - 34E 36A - 36C36D - 36E 38A - 38C38D - 38E 40A - 40C40D - 40E 42A - 42C42D - 42E 44A - 44C44D - 44E 46A - 46C46D - 46E 48A - 48C48D - 59E 50A - 50C
    XS (A-C) – 4X (F-G)
    Alpha/Cup SizeXS (A-C)XS (D-E)XS (F-G)S (A-C)S (C-E)S (F-G)M (A-B)M (C-E)M (F-G)L (A-B)L (C-E)L (F-G)XL (A-B)XL (C-E)XL (F-G)2XL (A-B)2XL (C-E)2XL (F-G)1X (A-B)1X (C-E)1X (F-G)2X (A-B)2X (C-E)2X (F-G)3X (A-B)3X (C-E)3X (F-G)4X (A-B)4X (C-E)4X (F-G)
    Band/Cup Size30A - 30C 32A - 32B30D - 30E30F - 30G34A - 34B 32C32D - 32E 34C32F - 32G36A - 36B36C 34D - 34E34F - 34G38A - 38B38C 36D - 36E36F - 36G40A - 40B40C 38D - 38E38F - 38G42A - 42B42C 40D - 40E40F - 40G44A - 44B44C 42D - 42E42F - 42G46A - 46B46C 44D - 44E44F - 44G48A - 48B48C 46D - 46E46F - 46G50A - 50B50C 48D - 48E48F - 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.

    Cup size options: A, B, C, D, E (DD), F (DDD), and G (DDDD).

    Three Tips for Finding the Right Fit

    Because when it fits, it’s a beautiful thing.

    1. Check the Straps

    If the underband stays put when you raise your arms, you’re good to go. It should sit level on your ribs with enough room for two fingers underneath. Straps should feel secure and barely-there—no digging or slipping.

    2. Check the Band

    Make sure the fabric’s got you fully covered without gaping, bulging, or you know, squishing the girls.

    3. Test the Support

    Do five jumping jacks (or any move you’d normally do in a workout). Too much bounce? Go for a higher-support style, a wider strap or a trusty racerback.

    1. Check the Straps

    If the underband stays put when you raise your arms, you’re good to go. It should sit level on your ribs with enough room for two fingers underneath. Straps should feel secure and barely-there—no digging or slipping.

    2. Check the Band

    Make sure the fabric’s got you fully covered without gaping, bulging, or you know, squishing the girls.

    3. Test the Support

    Do five jumping jacks (or any move you’d normally do in a workout). Too much bounce? Go for a higher-support style, a wider strap or a trusty racerback.

    Shop by Features

    Sports Bra Size Chart

    Adjustable

    A fit so good, it feels custom. With hook and eye clasps, adjustable straps, and more, you can fine tune these bras so they hit in all the right places.

    Sports Bra Size Chart

    Easy On/Off

    Say goodbye to wrestling with your sports bra after a workout. Back clasps and some extra stretch make these bras a breeze to put on and remove.

    Sports Bra Size Chart

    Padded

    Whether you prefer removable pads or some built-in umph, there’s a padding option out there for every occasion.

    Sports Bra Size Chart

    Maternity

    Shop bras with discreet layers and sliding bands that make pregnancy and beyond a little easier.