Bra Size Calculator

Wacoal Bra Size Guide

Convert US, UK, and EU Wacoal sizes, compare signature fits, and use sister sizes to stay comfortable across every collection.

Calculate my sizeDownload conversion table

Quick conversion reference

Refer to this chart after running the Bra Size Calculator. Match your US size to UK and EU labels to shop abroad or online.

USUKEUNotes
30D30D65DPetite-friendly band in Embrace Lace and Halo Lace.
32DD32E70ESignature fit for Awareness wire-free and Visual Effects minimizers.
34DDD34F75FHigh-demand size in Basic Beauty contour bras.
36G36F80GCheck strap support in Back Appeal and Red Carpet conversions.
38H38FF85HPair with sister sizes for the Sports Underwire and Simone collections.

Collection fit notes

Red Carpet Convertible

Designed for event wear with multi-way straps. Runs true to band; cups are lightly structured to avoid gaping.

Visual Effects Minimizer

Reduces projection up to one cup size. Band feels firm—calculate your base size, then test the looser sister if between hooks.

Awareness Underwire

Everyday t-shirt coverage with smooth cups. Ideal for post-mammogram comfort thanks to wider side wings.

Sport Underwire

Hybrid encapsulation/compression design. Use the sports advisor after calculating your size to dial in strap tension.

Smart fitting checklist

  • Measure with the Bra Size Calculator first, then compare US vs UK tags inside Wacoal bras before shopping internationally.
  • If the band feels snug, explore the next sister size up (e.g., 34DD → 36D) before assuming the cups are incorrect.
  • For lace collections, let the fabric warm to your body—reassess fit after 5 minutes before swapping sizes.
  • Document strap lengths in inches/cm; Wacoal straps are often fully adjustable but shorter on petite-focused styles.

Helpful Wacoal resources

Understand the full Bra Size Calculator toolkitPlan Wacoal sister sizes for different collectionsMatch Wacoal Sport Underwire support to your workout

Frequently asked questions

Do Wacoal bras run true to size?

Bands tend to run true in US sizing with moderate firmness. If your calculator result feels tight, test the looser sister band while keeping the cup depth consistent.

How do I convert Wacoal sizes internationally?

Use the conversion table from our calculator results or the quick chart above. Example: US 34DD equals UK 34E and EU 75E.

What Wacoal styles support fuller busts?

Look to Visual Effects Minimizer, Back Appeal, and Simone collections. They feature supportive wings and wider straps to stabilize heavier tissue.