Wacoal Bra Size Chart & Size Converter (UK, US, EU, AU)

Wacoal Cup Size Conversion Chart

Cup sequence from Wacoal’s official international size guide. Read across a row to convert a cup on the same band:

UK and Australian sizing use doubled letters (DD, FF, GG…) as full steps; US sizing goes DD, DDD and then single letters; European and French sizing use one letter per step. That is why converting by counting letters goes wrong. Our global bra size converter handles every system.

Wacoal band conversion by system

Wacoal band conversion by system

Wacoal Band Size Conversion Chart

UK and US bands share the same numbers. European and Japanese bands rise by 5 for each 2-inch band step, French bands are the European figure plus 15, and Australian bands follow dress sizes. These match our sizing methodology and the Australian bra size chart.

Full Wacoal Size Grid: UK to US and EU

Find your UK band on the left and UK cup along the top; each cell shows the US and European equivalent from Wacoal’s chart.

About Wacoal Sizing

Wacoal is a Japanese lingerie company whose European business (Wacoal Europe) also owns UK full-bust brands such as Freya, Fantasie and Elomi. That is why the international chart on wacoallingerie.com uses the same structure as those brands: UK band and cup letters as the reference, with US letters shown as conversions. The US arm, Wacoal America, sells in US sizing, and reviewers on fit communities have reported that some Wacoal America style charts suggest different sizes from a tape-measure result. So treat the official chart as your conversion key, and the fit check as the final decision.

The practical upshot: if you buy Wacoal in the US you will see US letters (D, DD, DDD, G…). If you buy from a UK or European retailer you will see UK or EU letters. A US 36DDD and a UK 36E are the same cup on this chart, and a UK 36F is a US 36G. Our UK bra size calculator gives you the UK size directly.

Buying Wacoal in Different Countries

The same Wacoal bra is labelled differently depending on where you buy it. Here is how one size reads in each market on Wacoal’s official chart:

Two practical tips. First, when a retailer lists a size without saying which system it uses, look at the band: a two-digit band in the 60s–100s is European, a single-digit or teens band is Australian, and 28–48 is UK or US. Second, for cup letters above DD, ask or check the size chart on the listing. UK and US letters look the same but mean different cups. Our global bra size converter handles any combination, and the brand size decoder explains labels from dozens of brands.

Returns are another reason to get this right. Ordering from abroad often means paying return postage, so confirming the label system before you buy can save the cost of a second order. If you are between sizes, order your calculated size and its sister size together from a retailer with free returns, then send back the one that fits less well.

Wacoal Sizing: Worked Examples

Example 1: from a US size. You wear US 34DDD. Bands keep the same number, and on Wacoal’s chart US DDD sits on the same row as UK E, so you choose UK 34E (EU 75F).

Example 2: from a European size. You wear EU 80G. EU 80 is a UK 36 band and EU G sits with UK F, so your Wacoal size is UK 36F, or US 36G.

Example 3: from measurements. A snug underbust of 32 inches gives a 32 band. A full bust of 37 inches is 37 − 32 = 5 inches, which is 5 cup steps in UK sizing, or UK 32DD. On Wacoal’s chart that is US 32DD and EU 70E.

Example 4: from an Australian size. AU 12C is UK 34C, because Australian bands follow dress sizes and Australian cups use UK letters.

Always convert row by row from the brand’s own chart. The same physical cup carries a different letter in each system.

How to Measure for a Wacoal Bra

How to measure for a Wacoal bra

How to measure for a Wacoal bra

How a Wacoal Bra Should Fit

Shape matters as much as size; see our breast shapes guide and cup gaping fixes.

Wacoal Sister Sizes

Sister sizes keep the same cup volume on a different band. These pairs are calculated from Wacoal’s UK cup sequence:

Use a sister size to fix the band, not the cup. The sister size calculator works for any size.

Common Wacoal Sizing Mistakes

Wacoal Bras

Verified in stock on Amazon with at least a 4.0-star average and thousands of ratings, checked November 2026. Wacoal listings on Amazon US use US sizing.

Compare With Other Brand Charts

See our charts for Calvin Klein, SKIMS, Aerie, Target and Uniqlo, or decode any label with the brand size decoder. For fuller cups, see the best bra brands for large busts.

How This Chart Was Checked

Conversions are taken from Wacoal’s official international size guide (https://www.wacoallingerie.com/uk/en/size-guide/), checked in November 2026; tables, sister sizes and examples on this page are generated directly from that data. Measuring guidance follows our methodology. If a product listing shows a different chart, follow the listing.

Frequently Asked Questions