Nike & Adidas Sports Bra Size Chart
Mass-market athletic brands: alpha-sized compression bras, with cup splits on the more supportive Nike styles.
Nike / Adidas sports bras in numbers
Nike and Adidas sell most sports bras by alpha size, which fits the ribcage and compresses the bust. Nike's Alpha and Swoosh lines add A–C / D–E variants on some styles; Adidas' TLRD Impact line offers cup-inclusive sizing on high-support pieces. For anything above a D, look for those variants.
Sub-brands and lines: Nike Alpha, Adidas TLRD.
Your measured size in Nike / Adidas sports bras
How this is computed: your US size read straight onto the US label, then adjusted for how Nike / Adidas sports bras typically grades: true bands, small cups. This brand sells many styles in alpha sizes (S/M/L or numeric athletic sizes) that fit the ribcage rather than the cup: the conversion below applies to its numbered bra-sized styles; for alpha styles use the brand grid and expect support to fall off above a C or D.
Where Nike / Adidas sports bras sits on the size grid
Cups Cup splits on select styles. Not every band–cup combination exists; the largest cups usually appear on mid-range bands only.
Best for:
- Low- to medium-impact
- Fashion-athletic
- Cup-split high-support at mass prices
Nike / Adidas sports bras bra size chart (US sizing)
Nike / Adidas sports bras labels in United States notation. Rows are bands (US number, US equivalent in brackets); columns are cup letters as Nike / Adidas sports bras writes them. Each cell links to that size's guide.
| Band | A | B | C | D | DD | DDD |
|---|---|---|---|---|---|---|
| 28 (US 28) | 28A | 28B | 28C | 28D | 28DD | 28DDD |
| 30 (US 30) | 30A | 30B | 30C | 30D | 30DD | 30DDD |
| 32 (US 32) | 32A | 32B | 32C | 32D | 32DD | 32DDD |
| 34 (US 34) | 34A | 34B | 34C | 34D | 34DD | 34DDD |
| 36 (US 36) | 36A | 36B | 36C | 36D | 36DD | 36DDD |
| 38 (US 38) | 38A | 38B | 38C | 38D | 38DD | 38DDD |
| 40 (US 40) | 40A | 40B | 40C | 40D | 40DD | 40DDD |
| 42 (US 42) | 42A | 42B | 42C | 42D | 42DD | 42DDD |
| 44 (US 44) | 44A | 44B | 44C | 44D | 44DD | 44DDD |
Coverage is approximate to the brand's core collections; the largest cups typically exist on mid-range bands only. US DDD is written DDD here.
Does Nike / Adidas sports bras run small or big?
Nike / Adidas sports bras bands run true to size: start with your measured band on the loosest hook, and expect it to feel snug for the first week if you are coming from an add-inches size.
Nike / Adidas sports bras cups grade small: try your measured cup and one up, and read a floating gore as the cup, not the band.
Nike / Adidas sports bras wires are average width for the US system. Straps: Racerback and adjustable variants.
What to try at Nike / Adidas sports bras
| Line | Notes |
|---|---|
| Nike Alpha | high-support, cup-split sizing |
| Nike Swoosh | medium support, some cup splits |
| Adidas TLRD Impact | high-support, cup-inclusive |
| Adidas Powerimpact | medium support |
| Shape | Try |
|---|---|
| Full on bottom | Nike Alpha |
| Full on top | Adidas TLRD |
| Shallow | Nike Swoosh |
| Projected | Nike Alpha D–E |
| Wide-set | Adidas Powerimpact |
Not sure of your shape? The fit guide explains the five shapes and how to recognize yours.
Nike / Adidas sports bras vs other brands
Side-by-side sizing, fit and your size in both. All comparisons →
Similar brands, different fit
Athletic-wear sizing (0–20) with cup groupings on key styles: the brand people most often ask how to convert a bra size into.
The high-impact sports bra brand graded in bra sizes, with UK cup letters: the benchmark for running support.
Australia's reference for sports and everyday: AU sizing, UK cup letters, and one of the most-tested high-impact bras.
Nike / Adidas sports bras sizing: answered
What size Nike sports bra am I?
Alpha size follows the band (roughly XS 30–32, S 32–34, M 34–36, L 36–38, XL 38–40); on Nike Alpha and some Swoosh styles choose the A–C or D–E variant for your cup. For anything above a D, buy the cup-split version.
What sizing system does Nike / Adidas sports bras use?
Nike / Adidas sports bras sizes in United States (US) convention: bands Alpha XS–3XL; Nike offers A–C / D–E cup splits on some styles, cups Cup splits on select styles. US labels: a US 34C is a 34C here.
Does Nike / Adidas sports bras run big or small?
Nike / Adidas sports bras bands run true to size: start with your measured band on the loosest hook. Nike / Adidas sports bras cups grade small: try your measured cup and one up.
What is my size in Nike / Adidas sports bras?
Start with your measured size, convert it to US notation, then apply the brand's grading: start with your measured band on the loosest hook. try your measured cup and one up. The calculator on this page does both.
What is Nike / Adidas sports bras best known for?
Nike Alpha: high-support, cup-split sizing. Also: Nike Swoosh (medium support, some cup splits); Adidas TLRD Impact (high-support, cup-inclusive).
Which Nike / Adidas sports bras bra suits my shape?
Full on bottom: Nike Alpha; Full on top: Adidas TLRD; Shallow: Nike Swoosh; Projected: Nike Alpha D–E; Wide-set: Adidas Powerimpact.
Are Nike / Adidas sports bras sizes the same as Lululemon?
Same notation where the systems match, different fit. Nike / Adidas sports bras: true band, small cup, average wire. Lululemon: firm band, true cup, average wire. Convert the label, then apply the fit notes.
Brasize.ai does not sell bras and is not affiliated with this brand. Report a correction via the editorial policy.
Opens HauteFlair’s own hub page; use your measured size there. HauteFlair is owned by the same company as Brasize.ai; that relationship never changes the sizing math, charts, or fit advice on this page. How this site makes money.
Start with your measured size
Two measurements, then convert into any brand.
Calculate My Bra Size →