| Size | XS | S | M | L | XL |
|---|---|---|---|---|---|
| Numeric size | 6 - 7 | 8 - 9 | 10 - 12 | 14 - 16 | 18 - 20 |
| Underbust (cm) | 63 - 65.5 | 66 - 68.5 | 69 - 72.5 | 73 - 77 | 77.5 - 82 |
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Find your fit. Find your confidence.
Sports bras aren't just for game day, they're an everyday essential. The right bra backs you up, whether you're mid-workout, running to a lesson or just chilling out. Here's how to find the fit and support that keep up with your life, wherever you're heading.
Look at the ribcage (band) measurements in the chart to help find the right size and perfect bra for you. No guessing, no stressing.
How to measure using the girls' size chart: 3 steps
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Measuring your band size
Wrap a soft tape measure around your ribcage, just under your bust—that's your band size. Keep it level and snug. Not too tight, not too loose.
No tape measure? No problem.
A piece of string, a shoelace or ribbon work too. Wrap it around your ribcage, just under your bust. Mark where it meets, then measure the length with a ruler. Easy.
Find your bra size
Match your band measurement to the size chart. If you're between sizes, go for the bigger one—a little extra room always feels better than too tight. If you need a bigger size, check out the women's sizes below.
When to use the women's size tool
If your measurements are at the upper end of the girls' size chart (or you need more support, like a bra with cups), it's time to check out the women's size chart. The women's sizes overlap with the larger girls' sizes, so you might find your best fit there, especially for high-support bras.
For most of our low- and medium-support bras (cupless styles), you'll just need your alpha size, like XS, S, M or L.
For high-support bras with cups, you'll need both your alpha size and your cup size. For example, if you usually wear a size medium and your cup size is C, look for "M (C–E)" in the women's chart.
Don't know what size you are in women's sizing? Use the interactive size finder to find your perfect fit.
Find your women's 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 band size
Measure around the bra's bottom band, just under the bust. The tape measure should feel snug. Round up to the closest measurement. If you don't have a tape measure, use 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 centre 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.
How to pick your bra: Support, coverage, style
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Support
Make sure you go with the support level that matches your moves.
Light: yoga, Pilates or chill days, for comfort without too much hold.
Medium: strength training or gym sessions, when you need a bit more stability.
High: intense activities like HIIT or running, for when you need maximum hold.
Coverage
Performing at your best means performing in something you are comfortable in. Explore both girls' and women's styles for a variety of coverage options that best suit you.
Style
Choose the right Nike bra for your activity and personal style. Strappy, racerback and vibrant colours—your perfect style is waiting for you.
Nike Indy
Minimal coverage for freedom to flex. Strappy design for a look that flatters. Neckline and band offer expressive style.
Nike Swoosh
Winning support for every move. Sleek racerback design for comfort during key moves. Classic compression sports bra, for a snug fit.
Nike Alate
Softly lined cups for contouring comfort. Smoothing back panels for a polished look. Adjustable, convertible criss-cross straps.
Nike Indy
Minimal coverage for freedom to flex. Strappy design for a look that flatters. Neckline and band offer expressive style.
Nike Swoosh
Winning support for every move. Sleek racerback design for comfort during key moves. Classic compression sports bra, for a snug fit.
Nike Alate
Softly lined cups for contouring comfort. Smoothing back panels for a polished look. Adjustable, convertible criss-cross straps.
FAQs
When do I need a bra with cups vs. one without?
You'll want a bra with cups for high-support activities, like running, HIIT or intense team sports. For lower-impact days like yoga, Pilates or strength training, a bra without cups gives you plenty of comfort and freedom to move.
How do girls' sizes overlap with women's?
Girls' bras offer more coverage for extra comfort and support. If you're reaching the top end of the girls' size chart or want a different fit, it might be time to try women's sizes. There's some overlap between girls' and women's sizes: for example, a girls' S usually matches up with a women's XS and so on. Check the size chart above to see how your size translates.