| Alpha Size | XS | S | M | L | XL | 2XL | 1X | 2X | 3X |
|---|---|---|---|---|---|---|---|---|---|
| Band/Cup Size | 30A - 30E 32A - 32B | 32C - 32E 34A - 34C | 34D - 34E 36A - 36C | 36D - 36E 38A - 38C | 38D - 38E 40A - 40C | 40D - 40E 42A - 42C | 42D - 42E 44A - 44C | 44D - 44E 46A - 46C | 46D - 46E 48A - 48C |
Women’s Sports Bras
Find Your Bra Size
Find your bra size with our two-step quiz. Before you start, wear an unlined bra that supports your natural shape — no bralette or padded bra.
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.
| Alpha/Cup Size | XS (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) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Band/Cup Size | 30A - 30C 32A - 32B | 30D - 30E | 30F - 30G | 34A - 34B 32C | 32D - 32E 34C | 32F - 32G | 36A - 36B | 36C 34D - 34E | 34F - 34G | 38A - 38B | 38C 36D - 36E | 36F - 36G | 40A - 40B | 40C 38D - 38E | 38F - 38G | 42A - 42B | 42C 40D - 40E | 40F - 40G | 44A - 44B | 44C 42D - 42E | 42F - 42G | 46A - 46B | 46C 44D - 44E | 44F - 44G | 48A - 48B | 48C 46D - 46E | 46F - 46G |
To get the best fit within our Alpha/Cup size range, find your usual size (XS–3X), 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
Two fingers should fit comfortably between the band and your shoulders.
2. Check the Band
Raise your arms, making sure the band stays in place.
3. Test the Support
Move in it. You should feel comfortable and confident.
1. Check the Straps
Two fingers should fit comfortably between the band and your shoulders.
2. Check the Band
Raise your arms, making sure the band stays in place.
3. Test the Support
Move in it. You should feel comfortable and confident.
Find Your Nike Sports Bra
Light
Designed for all-day wear, comfort, and support, these bras are softer and less structured. Best for low-intensity activities like yoga, Pilates or casual hikes.
• Nike Indy Bra
• Nike Alate BraMedium
Giving you more coverage and compression to keep everything in place, these bras work well for any cup size. Best for medium-impact workouts like running, training and indoor cycling.
• Nike Swoosh BraHigh
Shape, support and compression in one seamless style. This racerback fits like a snug crop top so you’re free to run, jump and shoot hoops.
• Nike Alpha Bra
• Nike Swoosh High SupportGirls
From fit to support level, our girls’ bras are designed to keep up, even while playing hard. This means sweat is no problem!
• Nike Swoosh
• Nike Indy
• Nike Trophy
Find Your Nike Sports Bra
Light
Designed for all-day wear, comfort, and support, these bras are softer and less structured. Best for low-intensity activities like yoga, Pilates or casual hikes.
• Nike Indy Bra
• Nike Alate Bra
Medium
Giving you more coverage and compression to keep everything in place, these bras work well for any cup size. Best for medium-impact workouts like running, training and indoor cycling.
• Nike Swoosh Bra