Big W Size Chart
Australian department stores · women's
Big W publishes two separate women's sizing systems side by side: an AU numeric chart from 6 to 18 and an independent letter chart from XXS to 3XL, and it never states a numeric-to-letter equivalence, so treat a numeric tag and a letter tag as different systems. The numeric chart uses single centimetre values, with a size 12 at a 95cm bust, 75cm waist and 100cm hip, stepping evenly by 5cm. The letter chart uses ranges instead, with a Medium spanning a 92 to 98cm bust, 72 to 78cm waist and 97 to 103cm hip. Both cover tops, pants, dresses, jackets, jumpers and activewear; sleepwear has near-identical separate charts. Big W's plus range runs 16 to 26 with its own, larger measurements, where a plus 16 is a 115cm bust against 105cm on the core chart, so check which chart a larger-size tag belongs to before comparing.
Big W publishes two separate systems: AU numeric (6–18, single values) and letters (XXS–3XL, ranges), with no stated equivalence. Charts are in centimetres.
Big W body measurements
| Size | Bust (cm) | Waist (cm) | Hip (cm) |
|---|---|---|---|
| 6 | 80 | 60 | 85 |
| 8 | 85 | 65 | 90 |
| 10 | 90 | 70 | 95 |
| 12 | 95 | 75 | 100 |
| 14 | 100 | 80 | 105 |
| 16 | 105 | 85 | 110 |
| 18 | 110 | 90 | 115 |
How Big W fits
Big W runs two independent published systems: numeric 6–18 (single values) and letter XXS–3XL (ranges), with no stated equivalence between them. The plus chart (16–26) is much larger at the same number: a plus 16 is a 115cm bust versus 105cm on the core chart.
Big W sizing — frequently asked questions
What is a Big W size 12 in cm?
A Big W size 12 fits a 95cm bust, 75cm waist and 100cm hip on the numeric chart, which runs from 6 to 18 in even 5cm steps. The chart covers tops, pants, dresses, jackets, jumpers and activewear.
What is a Big W size Medium in cm?
Big W's letter chart is separate from its numeric chart and is published as ranges: a Medium spans a 92 to 98cm bust, 72 to 78cm waist and 97 to 103cm hip. The letter chart runs from XXS (76 to 81cm bust) to 3XL (116 to 122cm bust), and Big W states no equivalence between letters and numeric sizes.
How does Big W plus sizing differ from the regular chart?
The plus chart runs 16 to 26 with much larger measurements at the same number: a plus 16 is a 115cm bust, 98cm waist and 120cm hip versus 105cm, 85cm and 110cm for a regular 16. The plus range tops out at a 140cm bust, 123cm waist and 145cm hip at a 26.
How to measure Big W against your own wardrobe
The most reliable way to check fit is to compare Big W's chart above to an item you already own. Lay it flat and measure in centimetres — see the full how-to-measure guide for step-by-step instructions.
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Browse the shop →Last verified: July 2026. Source: bigw.com.au.