Billabong Size Guide
Billabong is an Australian surf and lifestyle brand, established in 1973, renowned for wetsuits, swimwear, boardshorts, and casual outerwear built for surfers, swimmers, and beach-goers. Sizing is engineered around freedom of movement in and out of the water — outerwear tends toward a relaxed, athletic fit, whilst wetsuits use height and weight alongside body measurements for precision. Billabong offers extensive sizing across men’s, women’s, and children’s ranges. Women’s swimwear and bikinis generally run slightly smaller than other categories; size up when between sizes or preferring a more comfortable fit.
How to Measure
- Chest: Wrap a soft tape horizontally around the fullest part of your chest, directly beneath the armpits. Keep the tape parallel to the floor and snug but not tight.
- Bust (women’s): Measure underneath your arms around the fullest part of your bust, typically 5–8 cm below the shoulder bone.
- Waist: Find your natural waistline — the narrowest point of your torso, just above the belly button. The tape should feel comfortable without restricting breathing.
- Hips: Stand with feet together and measure around the fullest part of your hips and buttocks, approximately 18–23 cm below your waist.
- Height & weight (wetsuits): Stand barefoot against a wall to record height; weigh yourself in light clothing. Cross-reference both against the wetsuit chart for your best match.
- Foot length (shoes & sandals): Stand on paper with your heel against a wall, mark the longest toe, and measure from wall to mark in centimetres. Compare against the foot-length column below.
- Arm length (men’s outerwear): Billabong measures arm length from the centre back between the shoulders down to the wrist, with arms slightly bent.
Women’s Clothing Size Chart
| Size Label | UK | US | EU | Chest (inches) | Waist (inches) | Hips (inches) |
|---|---|---|---|---|---|---|
| XS | 6 | 0–2 | 34 | 31.5–33 | 23.5–25 | 33–34.5 |
| S | 8 | 4 | 36 | 33–34.5 | 25–26.75 | 34.5–36 |
| M | 10 | 6 | 38 | 34.5–36 | 26.75–28.25 | 36–37.75 |
| L | 12 | 8 | 40 | 36–37.75 | 28.25–30 | 37.75–39.25 |
| XL | 14 | 10 | 42 | 37.75–39.25 | 30–31.5 | 39.25–41 |
Men’s Clothing Size Chart
| Size Label | UK | US | EU | Chest (inches) | Waist (inches) | Hips (inches) |
|---|---|---|---|---|---|---|
| XS | 32 | XS | 44 | 32–35 | 26–28 | 33.5–35.5 |
| S | 34 | S | 46 | 35–38 | 28.75–31 | 35.75–37.75 |
| M | 36 | M | 48 | 38.5–41 | 31.5–33.5 | 38–40 |
| L | 38 | L | 50 | 41.75–44.5 | 33.75–36 | 40.5–42.5 |
| XL | 40 | XL | 52 | 44.75–47.5 | 36.5–39 | 42.75–44.75 |
| XXL | 42 | XXL | 54 | 48–50.75 | 39.25–41.75 | 45.25–47.25 |
Women’s Swimwear & Bikini Size Chart
Women’s swimwear runs slightly smaller than outerwear. Consider sizing up when in doubt.
| Size Label | UK | US | EU | Bust (inches) | Waist (inches) | Hips (inches) |
|---|---|---|---|---|---|---|
| XS | 6 | 2 | 34 | 30.5–32.5 | 23–25 | 32.5–34.5 |
| S | 8 | 4 | 36 | 32.5–34.5 | 25–27 | 34.5–36.5 |
| M | 10 | 6 | 38 | 34.5–36.5 | 27–29 | 36.5–38.5 |
| L | 12 | 8 | 40 | 36.5–38.5 | 29–31 | 38.5–40.5 |
| XL | 14 | 10 | 42 | 38.5–40.5 | 31–33 | 40.5–42.5 |
| XXL | 16 | 12 | 44 | 40.5–42.5 | 33–35 | 42.5–44.5 |
Men’s Shoes, Sandals & Flip Flops
| UK | US Men’s | US Women’s | EU | Foot Length (cm) |
|---|---|---|---|---|
| 5 | 6 | 7 | 39 | 25.2 |
| 6 | 7 | 8 | 40 | 26.5 |
| 7 | 8 | 9 | 41 | 26.9 |
| 8 | 9 | 10 | 42 | 27.5 |
| 9 | 10 | 11 | 43 | 28.6 |
| 10 | 11 | 12 | 44 | 29.5 |
| 11 | 12 | 13 | 45 | 30.3 |
| 12 | 13 | 14 | 46 | 31.5 |
| 13 | 14 | 15 | 47 | 32.0 |
| 14 | 15 | 16 | 48 | 32.5 |
Women’s Shoes, Sandals & Flip Flops
| UK | US Men’s | US Women’s | EU | Foot Length (cm) |
|---|---|---|---|---|
| 4 | 5 | 6 | 37 | 24.0 |
| 5 | 6 | 7 | 38 | 24.8 |
| 6 | 7 | 8 | 39 | 25.7 |
| 7 | 8 | 9 | 40 | 26.5 |
| 8 | 9 | 10 | 41 | 27.4 |
| 9 | 10 | 11 | 42 | 28.5 |
Children’s Shoes
| UK | US Men’s | US Women’s | EU | Foot Length (cm) |
|---|---|---|---|---|
| 13 | — | 1 | 32 | 20.1 |
| 1 | 2 | 2 | 33 | 20.9 |
| 2 | 3 | 3 | 34 | 21.8 |
| 2.5 | 4 | 4 | 35 | 22.5 |
| 3 | 5 | 5 | 36 | 23.5 |
| 4 | 6 | 6 | 37 | 24.5 |
| 5 | 7 | 7 | 38 | 25.0 |
Children’s Outerwear Size Chart
| Size Label | UK | US | EU | Chest (inches) | Waist (inches) | Hips (inches) |
|---|---|---|---|---|---|---|
| XS | 8 | 8 | 134 | 26.75–28 | 23.5–24.5 | 28–29 |
| S | 10 | 10 | 140 | 28.75–30 | 24.75–26 | 30–31 |
| M | 12 | 12 | 146 | 30.75–32 | 26.75–28 | 32–33 |
| L | 14 | 14 | 152 | 32.75–34 | 28.75–30 | 34–35 |
| XL | 16 | 16 | 164 | 34.25–36.5 | 30.25–31.5 | 35–36.25 |
Product-Specific Guidance
Surf wetsuits: Billabong wetsuits use a dedicated sizing system based on height, weight, chest, and waist — not standard clothing labels. Men’s wetsuits offer multiple body-type variants including Short (ST), Medium Short (MS), Medium Tall (MT), Large Short (LS), Large Tall (LT), and Extra Large Short (XLS) to match different torso and limb proportions. Women’s wetsuits include Tall (MT, LT) options for longer torsos. Always prioritise height and weight first, then confirm chest and waist fall within range. A wetsuit should fit snugly with no gaps at the lower back or underarms.
Swimwear & bikinis: Billabong women’s swimwear runs slightly smaller than outerwear. Bikini tops correspond to bra cup sizes from A through DDD depending on size. Boardshorts for women use numbered waist sizes (1, 3, 5, 7, 9, 11) mapped to standard letter sizes. Size up if you are between sizes or prefer more coverage.
Boardshorts: Men’s boardshorts follow standard waist sizing and are designed for active wear with stretch fabrics. Women’s boardshorts align with the swimwear chart above. Check whether the style is fixed-waist or tie-adjustable, as this affects fit at the hips.
Outerwear & snow jackets: Casual outerwear follows the men’s and women’s clothing charts above. Snow-specific outerwear uses height alongside chest, waist, and hip measurements for layering room. Billabong measures men’s arm length from centre back between the shoulders to the wrist with arms slightly bent — account for this when comparing against your own measurements.
Flip flops, slides & sandals: Foot length in centimetres is the most reliable guide across Billabong footwear. Winter sandals use combined size brackets (e.g. XS–S); choose the bracket whose foot-length range includes your measurement. Women’s sizes run approximately 1.5 EU sizes smaller than men’s at the same foot length.
Sizing Tips
- Women’s swimwear and bikinis run slightly small — size up when between sizes or if you prefer a less compressive fit.
- For wetsuits, match height and weight first; chest and waist confirm the fit. A properly fitted wetsuit should feel snug when dry but not restrict breathing.
- Men with shorter or longer torsos should select wetsuit variants labelled ST, MT, LT, or XLS rather than forcing a standard length.
- Billabong men’s UK clothing sizes (32, 34, 36) refer to chest measurement in inches, not the same numbering as women’s UK dress sizes.
- When buying flip flops or slides, measure foot length in centimetres rather than relying solely on your usual trainer size.
- Snow outerwear is cut with room for base layers; if you are at the upper end of a size range, consider sizing up for comfortable layering.
- Children’s outerwear uses age-oriented EU sizing (134–164); cross-reference your child’s chest and height measurements rather than buying purely by age.
- Neoprene wetsuits loosen slightly in the water; avoid sizing up excessively or cold water will flush through gaps.