UK to AU Plus Size Converter 🇦🇺
The easiest conversion in plus size fashion! UK and Australian sizes are identical — your complete guide to shopping Down Under with zero conversion stress.
Here's the best news in international plus size shopping: UK and Australian clothing sizes are exactly the same. A UK 22 is an AU 22. A UK 26 is an AU 26. No math, no conversion charts to memorize, no second-guessing at checkout. But while the numbers are identical, Australian retailers have their own distinct fit characteristics, fabric preferences for the Southern Hemisphere climate, and shopping platforms that UK shoppers need to understand. This guide covers everything: the historical reason UK and AU sizing align, how Australian plus size brands fit compared to UK brands, seasonal shopping advantages, and essential tips for a seamless cross-hemisphere shopping experience.
Select your UK or AU size — they're identical! This calculator also displays US and EU equivalents for complete international reference.
UK to AU Plus Size Reference Chart
Below is the complete UK to AU plus size reference chart covering sizes 16 through 38. Because UK and Australian sizes are numerically identical, this chart serves as your master reference for all international conversions — UK, AU, US, and EU sizes in one view. The highlighted row marks the pivotal UK/AU 22 / US 18 crossover.
| 🇬🇧 UK Size | 🇦🇺 AU Size | 🇺🇸 US Size | 🇪🇺 EU Size | Bust (in) | Waist (in) | Hip (in) |
|---|---|---|---|---|---|---|
| 16 | 16 | 12 | 44 | 39-40 | 31-32 | 41-42 |
| 18 | 18 | 14 | 46 | 41-42 | 33-34 | 43-44 |
| 20 | 20 | 16 | 48 | 43-44 | 35-36 | 45-46 |
| 22 | 22 | 18 | 48-50 | 45-46 | 37-38 | 47-48 |
| 24 | 24 | 20 | 50-52 | 47-48 | 39-40 | 49-50 |
| 26 | 26 | 22 | 52-54 | 49-50 | 41-42 | 51-52 |
| 28 | 28 | 24 | 54-56 | 51-52 | 43-44 | 53-54 |
| 30 | 30 | 26 | 56-58 | 53-54 | 45-46 | 55-56 |
| 32 | 32 | 28 | 58-60 | 55-56 | 47-48 | 57-58 |
| 34 | 34 | 30 | 60-62 | 57-58 | 49-50 | 59-60 |
| 36 | 36 | 32 | 62-64 | 59-60 | 51-52 | 61-62 |
| 38 | 38 | 34 | 64-66 | 61-62 | 53-54 | 63-64 |
UK and Australian sizes are identical. No conversion needed. UK 22 = AU 22. UK 26 = AU 26. This alignment, inherited from British colonial sizing standards, makes Australia the most straightforward international market for UK plus size shoppers. Your UK size is your AU size — always.
Australian clothing sizes follow the exact same numerical system as the UK. A UK 22 is an AU 22. This isn't a coincidence — Australia's sizing standards were historically derived from British systems during the colonial period, and unlike the US (which developed its own sizing divergence), Australia maintained alignment with the UK standard.
This historical alignment persisted even as both countries developed independent fashion industries. Australian and UK size labels are interchangeable — garments sold in both markets often carry dual "UK/AU" size tags confirming the equivalence. For plus size shoppers, this means Australia is the only major international market where you don't need to memorize a single conversion number. Your UK size is your AU size, period.
"Australian sizing is the gift that keeps on giving — zero conversion, zero math, zero stress. Your UK 24 body wears an AU 24. That's it. That's the whole guide."
While the numbers are identical, the fit can differ. Australian plus size brands are designed for the Australian body type and climate — which means slightly different proportions, fabric weights, and design priorities compared to UK brands. Here's what to expect from different types of Australian retailers.
Pro tip: Australian plus size brands cut more generously through the hip and thigh than UK brands at the same numerical size. If you carry weight in your lower body, Australian brands may fit you better than UK brands. Australian fabrics also tend to be lighter and more breathable — perfect for the UK summer but may need layering in winter. For detailed comparisons, explore our plus size brand reviews.
Australian size charts typically use centimeters, though many major retailers now include dual measurements (cm and inches) for international shoppers. Since the sizes are numerically identical to UK sizes, your measurements are the real key to a perfect fit.
- ✓ Check the measurement system: Look for "cm" or "in" labels. If only cm is shown, multiply your inch measurement by 2.54. Most major Australian retailers now include both.
- ✓ Bust: Australian brands cut with slightly more room than UK brands at the same size. If you're between sizes in UK brands, you may fit the smaller AU size comfortably.
- ✓ Hip: The key measurement difference. Australian brands cut more generously through the hip and thigh. If UK trousers are snug in the thigh, Australian brands at the same size may fit perfectly.
- ✓ Inside Leg: Australian brands often offer multiple inseam lengths. If you're 5'7"+, check the inseam measurement — Australian standard lengths may run shorter than UK standard.
Your UK size is your AU size — so your existing measurements already work. The key advantage of Australian brands for UK shoppers is the more generous hip cut. If you've ever found UK trousers or skirts snug through the hip at your regular size, Australian brands at the same numerical size will likely give you the extra room you need.
Australia sits in the Southern Hemisphere, which means the seasons are reversed from the UK. This is one of the most under-appreciated advantages in plus size shopping — and it costs nothing to exploit.
- ☀️ Shop Australian summer during UK winter (December-February): While UK stores are full of heavy coats, Australian retailers are launching swimwear, resort wear, and lightweight linen collections. You get access to warm-weather plus size fashion six months before it reaches UK shores — and at end-of-season sale prices by February-March.
- ❄️ Shop Australian winter during UK summer (June-August): Preview next season's knitwear and layering pieces while the UK is in peak summer. Australian winter collections drop in June — you can shop coats in July and have them ready for UK autumn.
- 💰 End-of-season sales are offset by 6 months: Australian summer clearance (February-March) aligns perfectly with UK spring holiday planning. Australian winter clearance (August-September) hits just as UK shoppers start thinking about autumn wardrobes.
Shopping from Australia is relatively straightforward for UK customers — the identical sizing removes the biggest barrier. But there are still traps that can catch out even experienced international shoppers.
- ⚠ Forgetting about currency conversion. Australian prices are in AUD, not GBP. The exchange rate fluctuates: 1 AUD ≈ 0.50-0.55 GBP. An AU$100 dress is approximately £50-55. Always check the current rate before ordering.
- ⚠ Not accounting for fabric weight. Australian "winter" clothes are designed for mild winters (rarely below 10°C in major cities). An Australian "heavy coat" may feel like a light jacket in the UK. Read fabric descriptions and weights carefully.
- ⚠ Underestimating shipping time. Standard shipping from Australia to the UK takes 10-21 business days. Express reduces this to 5-10 days. Factor delivery time into seasonal shopping — order Australian summer pieces in January for February-March delivery.
- ⚠ Assuming all AU retailers ship to the UK. Some Australian plus size boutiques only ship domestically. Always check the shipping policy before building a cart. Major Australian plus size brands generally ship internationally.
Returning items to Australian retailers from the UK involves international shipping and longer processing times. Understanding the landscape before you order is essential.
Major Australian retailers: Large Australian plus size brands generally offer international returns with reasonable policies. Return shipping from the UK to Australia typically costs £15-30 and takes 2-4 weeks. Refunds are processed in AUD, so the credited amount may vary with exchange rate fluctuations. Most retailers require items returned within 30 days with tags attached.
Australian boutique brands: Smaller labels may have more restrictive policies — shorter return windows, store-credit-only refunds, or final sale on international orders. Always read the return policy before purchasing from a boutique you haven't shopped with before. For detailed breakdowns by retailer, visit our international returns guide.
Scenario 1: The Australian Summer Dress. It's January in the UK, grey and cold. You're a UK 24 and find a stunning linen dress from an Australian specialty plus size brand. Your UK 24 is an AU 24 — identical. Australian specialty brands cut generously through the hip, so the AU 24 will fit comfortably. The linen has no stretch, so don't size down even though Australian brands run generous. Order your true UK/AU 24. It arrives in 2-3 weeks — just in time to brighten the late winter wardrobe.
Scenario 2: The Australian Activewear Set. You're a UK 22 and want high-compression leggings from an Australian activewear brand. Your UK 22 = AU 22. But Australian activewear runs small with high compression — size up to AU 24 for comfort. Read reviews from shoppers with similar body types. The good news: Australian activewear brands produce world-class quality, and the AUD-GBP exchange rate makes premium leggings significantly cheaper than UK equivalents.
Yes — completely identical. A UK 22 is an AU 22. There is no conversion needed between UK and Australian clothing sizes. The numerical system is the same, inherited from British colonial sizing standards. This makes Australia the easiest international market for UK plus size shoppers. You'll often see dual "UK/AU" size tags on garments sold in both markets, confirming the equivalence.
Australia and the UK maintained aligned sizing standards derived from their shared colonial history. The United States, having gained independence much earlier, developed its own sizing system that diverged from the British standard. This is why US sizes run 2 sizes smaller than UK/AU sizes (US 18 = UK/AU 22). Australia simply never had a reason to change from the inherited British system.
The numerical size is identical, but the fit can differ. Australian plus size brands tend to cut more generously through the hip and thigh compared to UK brands at the same size. Australian fabrics are lighter and more breathable, designed for a warmer climate. If you're between sizes in UK brands, you may find the same numerical size in Australian brands gives you slightly more room where you need it most.
Australian plus size fashion offers several unique advantages for UK shoppers. (1) Zero size conversion — your UK size works immediately. (2) Reversed seasons — access summer styles in winter and preview winter collections in summer. (3) Favorable exchange rate — AUD to GBP typically makes Australian fashion 45-50% cheaper than the sticker price suggests. (4) Different aesthetic — Australian design emphasizes natural fabrics, bold prints, and relaxed silhouettes that complement UK plus size wardrobes beautifully.
Since Brexit, UK customers may incur VAT and customs duties on orders from Australia. Orders under £135 generally have VAT collected at the point of sale. Orders over £135 may be subject to additional customs duties. The UK-Australia Free Trade Agreement (signed 2021, implemented 2023) is progressively eliminating tariffs on most goods, including apparel. Always check the retailer's UK shipping page for current information and whether duties are included in the purchase price.
Standard international shipping from Australia to the UK typically takes 10-21 business days. Express shipping options can reduce delivery to 5-10 business days at a higher cost. Some major Australian retailers operate UK distribution centers or partner with UK-based logistics providers for faster delivery. During Australian holiday periods (December-January), expect additional delays of 5-7 days. Plan your seasonal shopping accordingly — order summer pieces in January, winter pieces in June.
Australian plus size fashion is the most accessible international market for UK shoppers — period. Zero size conversion, a favorable exchange rate, the strategic advantage of reversed seasons, and a distinct design aesthetic that emphasizes natural fabrics and bold, wearable style. Your UK 26 body wears an AU 26. That's the whole conversion guide.
The differences that matter aren't in the size label — they're in the fit (more generous through the hip), the fabrics (lighter and more breathable), and the timing (summer clothes when you need them most). Armed with your existing UK size and an understanding of these nuances, you're ready to explore one of the world's most exciting plus size fashion markets. For more international shopping guides, brand deep-dives, and plus size style inspiration, explore our complete collection of size guides, brand reviews, and international shopping tips.
About the PlusSizePlus Editorial Team
This article was researched, written, and reviewed by the PlusSizePlus Editorial Team. Our team creates educational resources covering plus size fashion, international size conversion, shopping guides, brand comparisons, and body-positive style advice. Every article is written to be clear, practical, and as accurate as possible based on publicly available sizing standards and retailer information. We review our articles periodically to keep them up to date as sizing conventions and brand policies evolve.
Disclaimer: This article is intended for educational and informational purposes only. While UK and Australian clothing sizes follow identical numerical systems, individual fit may vary between brands, specific garments, and fabric types. Always consult the specific retailer's official size chart and return policy before making a purchase. For important limitations and how this content should be used, please read our full Disclaimer.
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