18H
Shop 18H Bra Sizes – Find Your Confident Fit
Understanding the 18H Bra Size
Wearing the right bra makes a world of difference. A size 18H bra is designed for women with a fuller bust and a body size that needs both support and structure. In Australian bra sizes, the number 18 refers to your band size—around 43 inches (109 cm) under the bust—and the letter H indicates a generous cup size for women with high support needs.
When compared to other larger sizes, an 18H offers more cup volume than an 18F or 18G, making it suitable for those who need additional space in the cup without increasing the band size. Conversely, if you move to a size like 20G, you’re increasing the band size slightly while maintaining a similar cup volume to an 18H. This balance makes the 18H ideal for those who require a snug fit around the torso with enhanced bust support. Understanding these nuances helps ensure you're choosing the most supportive and flattering fit for your body.
International Size Equivalents
Shopping internationally or comparing sizing? Here’s how size 18H translates across regions:
| Region | Size Equivalent |
|---|---|
| Australia (AU) | 18H |
| UK | 40H |
| US | 40K |
| EU | 90K |
| France (FR) | 105K |
Quick Sizing Guide Using a Measuring Tape
Ready to get the perfect fit? Use a soft measuring tape and follow these steps, or try our Bra Fit Guide and Bra Finder Quiz for easy help.
- Band Size: Wrap the measuring tape snugly under your bust. Round to the nearest whole number to get your band size.
- Bust Size: Measure around the fullest part of your bust, keeping the tape horizontal and relaxed.
- Cup Size: Subtract your band size from your bust measurement. The difference determines your cup size—around 10 inches difference means an H cup.
Prefer expert help? Book a fitting appointment in-store or explore our virtual fittings for a convenient at-home experience.
Sister Sizes & Flexibility
If your favourite style isn’t in stock or you’re between sizes, consider these sister sizes:
These can help you get the right support—whether that's improved lift, better underband comfort, reduced shoulder strain, or a more balanced feel overall—especially when trying different bra styles or brands.
Recommended Bra Styles for Size 18H
We stock a curated range of bras that provide support without sacrificing style:
- Full cup bras: Total coverage and maximum support
- Sports bras: High impact or medium impact support for active days
- Strapless bras: Stay-put structure without shoulder straps
- Wirefree bras: Comfortable support with no wires
- Lacy bras: Beauty meets functionality for your lingerie drawer
- Wide straps & 3-hook underbands: Extra comfort for fuller busts
-
Nursing bras & maternity bras: Gentle support during and after pregnancy
From low impact wirefree bralettes to full support bras, we help you find your perfect fit every time.
Featured Brands in Size 18H
We offer a range of size 18H bras from globally trusted brands known for innovation and comfort, including:
- Chantelle
- PrimaDonna
- Panache
- Elomi
- Samanta
- Anita
-
Triumph
These brands are known for delivering excellent support across D-K cup ranges.
Your Perfect Fit Starts Here
Need help choosing your size? Start with our Bra Fit Guide and take the Bra Finder Quiz to narrow down your options based on fit and support preferences. Our in-store D-K cup bra-fitters and virtual fitting services are ready to help you get fitted with confidence.
Shopping online? We offer free shipping Australia-wide on orders over $150, easy returns, and support from our expert team. Experience the comfort of a well-fitted bra today – Shop Now.
FAQs About Size 18H Bras
What is a size 18H in bras?
It’s an Australian band size 18 with an H cup—perfect for women with a fuller bust looking for strong support and a comfortable fit.
Do you have sports bras in size 18H?
Yes, including high impact and medium impact styles for different activity levels.
Can I get a wirefree bra in this size?
Absolutely. We offer Support Wirefree Bralettes and Mesh Comfort Wirefree Bralettes in 18H for all-day comfort.
Do you provide bra fitting services?
Yes, in-store fittings and virtual bra fitting services are available to help you find your ideal bra.
What’s your returns policy?
We offer easy returns on eligible items so you can shop with confidence.