Wacoal Bra Size Chart & Sizing Guide
The US reference for consistent grading: seven decades of pattern engineering, a broad band range and cups to H in core lines.
Wacoal in numbers
Wacoal was founded in Kyoto in 1949 and built its reputation on measurement research: the company famously studies thousands of body scans to draft its patterns. Wacoal America grades to US sizing and is the brand fitters reach for when they need a size to behave exactly as its label says. The b.tempt'd line covers younger, lighter styles.
Sub-brands and lines: b.tempt'd.
Your measured size in Wacoal
How this is computed: your US size read straight onto the US label, then adjusted for how Wacoal typically grades: true bands, true cups.
Where Wacoal sits on the size grid
Cups A–H (some styles to I). Not every band–cup combination exists; the largest cups usually appear on mid-range bands only.
Best for:
- A first accurate size: the label matches the measurement
- Contour t-shirt bras that don't gape or spill
- Full-figure everyday support in US sizing
Wacoal bra size chart (US sizing)
Open the interactive size chart →
Wacoal labels in United States notation. Rows are bands (US number, US equivalent in brackets); columns are cup letters as Wacoal writes them. Each cell links to that size's guide.
| Band | A | B | C | D | DD | DDD | G | H |
|---|---|---|---|---|---|---|---|---|
| 30 (US 30) | 30A | 30B | 30C | 30D | 30DD | 30DDD | 30G | 30H |
| 32 (US 32) | 32A | 32B | 32C | 32D | 32DD | 32DDD | 32G | 32H |
| 34 (US 34) | 34A | 34B | 34C | 34D | 34DD | 34DDD | 34G | 34H |
| 36 (US 36) | 36A | 36B | 36C | 36D | 36DD | 36DDD | 36G | 36H |
| 38 (US 38) | 38A | 38B | 38C | 38D | 38DD | 38DDD | 38G | 38H |
| 40 (US 40) | 40A | 40B | 40C | 40D | 40DD | 40DDD | 40G | 40H |
| 42 (US 42) | 42A | 42B | 42C | 42D | 42DD | 42DDD | 42G | 42H |
| 44 (US 44) | 44A | 44B | 44C | 44D | 44DD | 44DDD | 44G | 44H |
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 Wacoal run small or big?
Wacoal bands run true to size across US bands 30–46: 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.
Wacoal cups grade true to the measured difference from A to H: a gap or overflow in the measured letter is a shape signal, so change the cut before the size.
Wacoal wires are average width for the US system. Straps: Standard; sport line uses wide, cushioned straps.
What to try at Wacoal
| Line | Notes |
|---|---|
| Awareness | the flagship full-figure underwire and wireless line, cups to H |
| Basic Beauty | contour t-shirt bra, one of the most consistent molded fits in US sizing |
| Halo Lace | seamless lace underwire in a broad range |
| Sport | high-impact underwire sport bras graded in bra sizes, not S/M/L |
| Shape | Try |
|---|---|
| Full on bottom | Basic Beauty contour, Halo Lace |
| Full on top | Awareness full cup |
| Shallow | Basic Beauty, wireless Awareness |
| Projected | Halo Lace, seamed Awareness |
| Wide-set | Retro Chic full-figure |
Not sure of your shape? The fit guide explains the five shapes and how to recognize yours.
Wacoal vs other brands
Side-by-side sizing, fit and your size in both. All comparisons →
Similar brands, different fit
Fashion lingerie with a lighter hand: elegant fabrics and softer support that suit smaller and mid-range cups best.
Structured everyday bras: the brand fitters recommend when a contour or minimizer needs to hold its shape all day.
French premium everyday, labelled in FR with EU and US equivalents; shallow, wide cups and among the widest wires in the category.
Wacoal sizing: answered
Is Wacoal true to size?
Yes. Wacoal is the US reference for grading that matches the label. Start with your measured size; if it doesn't fit, the problem is usually shape or an old +4 size, not Wacoal's grading.
What sizing system does Wacoal use?
Wacoal sizes in United States (US) convention: bands 30–46, cups A–H (some styles to I). US labels: a US 34C is a 34C here.
Does Wacoal run big or small?
Wacoal bands run true to size across US bands 30–46: start with your measured band on the loosest hook. Wacoal cups grade true to the measured difference from A to H.
What is my size in Wacoal?
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. The calculator on this page does both.
What is Wacoal best known for?
Awareness: the flagship full-figure underwire and wireless line, cups to H. Also: Basic Beauty (contour t-shirt bra, one of the most consistent molded fits in US sizing); Halo Lace (seamless lace underwire in a broad range).
Which Wacoal bra suits my shape?
Full on bottom: Basic Beauty contour, Halo Lace; Full on top: Awareness full cup; Shallow: Basic Beauty, wireless Awareness; Projected: Halo Lace, seamed Awareness; Wide-set: Retro Chic full-figure.
Are Wacoal sizes the same as Natori?
Same notation where the systems match, different fit. Wacoal: true band, true cup, average wire. Natori: soft band, small cup, average wire. Convert the label, then apply the fit notes.
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