US sizing · 72 sizes · tap any cell

The Wacoal Size Chart, Interactive

Wacoal runs one of the most complete US-system charts in department-store retail (A to H on bands 30 through 46) with engineering-led grading that fitters trust to run true.

The native chart

Every Wacoal size: tap for conversions

Some styles extend to I; sports styles vary by line.

Two measurements in

Your size at Wacoal

Snug underbust Relaxed bust

Same published math as the calculator (snug measure, no +4) then translated into Wacoal’s native notation and checked against the real chart above, which lights up your cell.

Reading it

How Wacoal sizing reads

Wacoal’s chart reads band-then-cup in inches and US letters: the alphabet doubles after D (DD, DDD) before jumping to G. Your measured US size maps straight onto this chart with no letter translation.

From our brand dossier

How Wacoal runs

BandBands run true to size: start with your measured band on the loosest hook.

CupCups grade true to the measured difference.

Wire & strapsWires are average width for the system. Straps: Standard; sport line uses wide, cushioned straps.

Quirk 1Sizes are labelled in US convention with DDD written as DDD (not F)

Quirk 2Cup H exists in Awareness and a few others; above H, Wacoal points to Elomi (same parent group in the US market)

Quirk 3Sport bras are graded in bra sizes: start with your measured size, not a t-shirt size

Full fit notes, style guidance and comparisons live on the Wacoal brand page.

Honest edges

Where this chart ends

Above H, move to UK letters at Fantasie or Elomi; below a 30 band, see the extended sizing guide. And if a symptom (riding band, gaping cup, poking wire) sent you size-hunting, the fix guides decode it before you spend anything.

Answered

Wacoal sizing: answered

Does Wacoal run true to size?

Band: Bands run true to size: start with your measured band on the loosest hook. Cup: Cups grade true to the measured difference. In one line: grading runs true to measurement: start exactly at your measured size.

What sizing system does Wacoal use?

Native US sizing (it reads band-then-cup in inches and US letters) the alphabet doubles after D (DD, DDD) before jumping to G. Your measured US size maps straight onto this chart with no letter translation. The interactive chart above shows every size with its US, UK, EU and FR equivalents.

What sizes does Wacoal carry?

30–46 bands with A–H cups in US notation. 72 sizes in the core chart. Some styles extend to I; sports styles vary by line.

What if Wacoal doesn't make my size?

Above H, move to UK letters at Fantasie or Elomi; below a 30 band, see the extended sizing guide. Sister sizes (same volume, different band) sometimes bridge a one-band gap: the calculator above tries them automatically before giving up.

Shop itAt HauteFlair, our sister retailer

See which brands HauteFlair carries →Shop bras by size

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 from the measured size

Two measurements, no inches added, sister sizes attached.

Calculate My Bra Size →