BILLABONG
Complete Apparel & Swim Size Guide
Use the charts below to find the best Billabong size for men’s and women’s apparel, boardshorts, bikinis and swimwear, plus boys’, girls’ and toddler clothing. Measurements are body measurements unless otherwise stated.
Most measurements are in inches. The toddler girls’ chart is provided in centimetres, matching Billabong’s published sizing. If you fall between sizes, choose the larger size for a more relaxed fit.
Billabong Men’s Tops, Bottoms & Boardshorts Size Guide
Use the alpha size for tops and elastic-waist items. Use the bottom size or waist measurement for pants, shorts, boardshorts and fixed-waist swim trunks.
| Size |
XS |
S |
M |
L |
XL |
XXL |
| Bottom / Boardshort Size |
28–29 |
30–31 |
32–33 |
34–35 |
36–38 |
40–42 |
| Neck |
13.5–15 |
14–15.5 |
14.5–16 |
15–16.5 |
15.5–17 |
16–17.5 |
| Chest |
36–38 |
38–40 |
40–42 |
42–44 |
44–46 |
46–48 |
| Centre-Back Sleeve |
32–33.5 |
33–34.5 |
34–35.5 |
35–36.5 |
36–37.5 |
37–38.5 |
| Waist |
27.5–29.5 |
29.5–31.5 |
31.5–33.5 |
33.5–35.5 |
35.5–38.5 |
39.5–42.5 |
| Hips |
36–38 |
38–40 |
40–42 |
42–44 |
44–47 |
48–51 |
Billabong Women’s Tops, Bottoms & Denim Size Guide
| Size |
XS |
S |
M |
L |
XL |
| US Clothing Size |
0 |
1–3 |
5–7 |
9 |
11 |
| Denim Size |
24 |
25–26 |
27–28 |
29–30 |
31 |
| True Waist |
24 |
25–26 |
27–28 |
29–30 |
31 |
| Chest |
30.5 |
32.5–33.5 |
34.5–35.5 |
36.5–37.5 |
38.5 |
| Low Waist |
29 |
30–31 |
32–33 |
34–35 |
36 |
| Hips |
34 |
35–36 |
37–38 |
39–40 |
41 |
Billabong Women’s Bikinis & Swimwear Size Guide
Use this chart for bikini tops, bikini bottoms, one-piece swimsuits and women’s swimwear. For bikini tops, use both bust and bra size when possible.
| Size |
XS |
S |
M |
L |
XL |
XXL |
| Women’s US Size |
0–2 |
2–4 |
4–6 |
8–10 |
12–14 |
16 |
| Junior Size |
0–1 |
3–5 |
7–9 |
11–13 |
15–17 |
19 |
| Bust |
30.5–32.5 |
32.5–34.5 |
34.5–36.5 |
36.5–38.5 |
38.5–40.5 |
40.5–42.5 |
| Waist |
23–25 |
25–27 |
27–29 |
29–31 |
31–33 |
33–35 |
| Hips |
32.5–34.5 |
34.5–36.5 |
36.5–38.5 |
38.5–40.5 |
40.5–42.5 |
42.5–44.5 |
| Bra Size |
A |
A–B |
B–C |
C–D |
D–DD |
DD–DDD |
Billabong Boys’ Tops & Elastic-Waist Bottoms Size Guide
| Size |
S |
M |
L |
XL |
| Approximate Age |
8–9 |
9–14 |
14+ |
14+ |
| Chest |
25–27.5 |
28–30.5 |
31–33.5 |
34–36.5 |
| Waist |
22–24 |
25–26 |
27–28 |
29–30 |
| Height |
49–54 |
52–60.5 |
60–65 |
65–68 |
| Weight (lb) |
50–65 |
63–95 |
90–122 |
110–140 |
Boys’ Numeric Bottoms & Boardshorts
| Bottom Size |
22 |
23 |
24 |
25 |
26 |
27 |
28 |
29 |
30 |
| Fit / Age Size |
8 Slim |
10 Slim |
8 Regular |
10 Regular |
12 Regular |
14 Regular |
16 Regular |
18 Regular |
20 Regular |
Billabong Girls’ Tops & Bottoms Size Guide
| Size |
XXS |
XS |
S |
M |
L |
| Age |
4–5 |
5–6 |
7–8 |
10–12 |
12–14 |
| Height |
41–44 |
45–50 |
51–54 |
55–58 |
59–61 |
| Chest |
22–23.5 |
24–25.5 |
26–27.5 |
28–29.5 |
29.5–30.5 |
| Natural Waist |
18–20 |
20.5–22 |
22.5–23.5 |
24–25.5 |
25–26.5 |
| Low Waist |
21–22.5 |
22.5–23.5 |
24–26 |
27–27.5 |
27–28.5 |
| Hips |
24.5–25.5 |
26–28 |
28.5–29.5 |
30–31 |
31–32 |
| Inseam |
18.5 |
23.5 |
25.5 |
27.5 |
29 |
Billabong Girls’ Bikinis & Swimwear Size Guide
| Size |
4 |
5 |
6X |
7 |
8 |
10 |
12 |
14 |
16 |
| Bust |
23 |
24 |
25 |
25.5–26.5 |
27–28 |
29–30 |
31–32 |
33–34 |
34.5–36.5 |
| Waist |
21 |
22 |
22 |
22.5–23.5 |
23.5–24.5 |
25–26 |
27–28 |
29–30 |
30.5–31.5 |
| Hips |
24 |
25 |
26 |
27–28 |
28–29 |
30–31 |
32–33 |
34–35 |
35–36 |
Billabong Toddler Boys’ Tops & Bottoms Size Guide
| Age |
2 |
3 |
4 |
5 |
6 |
7 |
| Kids’ Size |
2T |
3T |
4 / S |
5 / M |
6 / L |
7 / XL |
| Chest |
20–21 |
22–23 |
22–23 |
23–24 |
24–25 |
25–26 |
| Waist |
19–19.5 |
20–20.5 |
21–21.5 |
21.5–22 |
22.5–23 |
23.5–24 |
| Height |
33–35.5 |
36–38.5 |
39–41.5 |
42–44.5 |
45–46.5 |
47–48.5 |
| Weight (lb) |
26–29 |
30–33 |
33–37 |
37–43 |
44–49 |
47–55 |
Billabong Toddler Girls’ Tops & Bottoms Size Guide
Measurements in centimetres.
| Size / Age |
0 |
1 |
2 |
3 |
4 |
5 |
| Height |
70–80 |
80–90 |
90–95 |
100–105 |
105–110 |
110–115 |
| Chest |
51 |
53 |
56 |
58 |
60 |
63 |
| Natural Waist |
51 |
53 |
56 |
59 |
61 |
63 |
| Hips |
53 |
55 |
58 |
60 |
62 |
65 |
| Garment Inseam |
28 |
32 |
36 |
40 |
45 |
48 |
How to Measure
Neck: Measure around the base of the neck where a shirt collar naturally sits.
Chest / Bust: Measure around the fullest part of the chest or bust, keeping the tape level beneath the arms and across the shoulder blades.
Natural Waist: Measure around the narrowest part of the torso, usually just above the belly button.
Low Waist: Measure approximately 3 inches below the natural waist, where low-rise bottoms are designed to sit.
Hips: Stand with feet together and measure around the fullest part of the hips and seat.
Centre-Back Sleeve: Measure from the centre back of the neck, across the shoulder and down the arm to the wrist.
Inseam: Measure from the crotch seam down the inside of the leg to the desired hem.
Height: Stand barefoot with the back against a wall and measure from the floor to the top of the head.
Sizing may vary slightly by collection, fabric and intended fit. Check the individual product description for style-specific sizing notes.
