AU to UK Plus Size Converter 🇦🇺🇬🇧
The easiest conversion in plus size fashion! Australian and UK sizes are identical — your complete guide to shopping British fashion with zero conversion stress.
Here's the best news in international plus size shopping: Australian and UK clothing sizes are exactly the same. An AU 22 is a UK 22. An AU 26 is a UK 26. No math, no conversion charts to memorize, no second-guessing at checkout. This sizing alignment, inherited from British colonial standards, makes the UK the most accessible international market for Australian plus size shoppers. But while the numbers are identical, UK retailers have their own distinct fit characteristics, fabric preferences for the Northern Hemisphere climate, and seasonal timing that Australian shoppers can leverage. This guide covers everything you need for a seamless cross-hemisphere shopping experience.
Select your AU or UK size — they're identical! This calculator also displays US and EU equivalents for complete international reference.
AU to UK Plus Size Reference Chart
Below is the complete AU to UK plus size reference chart covering sizes 16 through 38. Because Australian and UK sizes are numerically identical, this chart serves as your master reference for all international conversions — AU, UK, US, and EU sizes in one view. The highlighted row marks the pivotal AU/UK 22 / US 18 crossover.
| 🇦🇺 AU Size | 🇬🇧 UK Size | 🇺🇸 US Size | 🇪🇺 EU Size | Bust (cm) | Waist (cm) | Hip (cm) |
|---|---|---|---|---|---|---|
| 16 | 16 | 12 | 44 | 99-102 | 79-82 | 104-107 |
| 18 | 18 | 14 | 46 | 104-107 | 84-87 | 109-112 |
| 20 | 20 | 16 | 48 | 109-112 | 89-92 | 114-117 |
| 22 | 22 | 18 | 48-50 | 114-117 | 94-97 | 119-122 |
| 24 | 24 | 20 | 50-52 | 119-122 | 99-102 | 124-127 |
| 26 | 26 | 22 | 52-54 | 124-127 | 104-107 | 129-132 |
| 28 | 28 | 24 | 54-56 | 129-132 | 109-112 | 134-137 |
| 30 | 30 | 26 | 56-58 | 134-137 | 114-117 | 139-142 |
| 32 | 32 | 28 | 58-60 | 139-142 | 119-122 | 144-147 |
| 34 | 34 | 30 | 60-62 | 144-147 | 124-127 | 149-152 |
| 36 | 36 | 32 | 62-64 | 149-152 | 129-132 | 154-157 |
| 38 | 38 | 34 | 64-66 | 154-157 | 134-137 | 159-162 |
Australian and UK sizes are identical. No conversion needed. AU 22 = UK 22. AU 26 = UK 26. This alignment, inherited from British colonial sizing standards, makes the UK the most straightforward international market for Australian plus size shoppers. Your AU size is your UK size — always.
Australian clothing sizes follow the exact same numerical system as the UK. An AU 22 is a UK 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 "AU/UK" size tags confirming the equivalence. For plus size shoppers, this means the UK is the only major international market where you don't need to memorize a single conversion number. Your AU size is your UK size, period.
"UK sizing is the gift that keeps on giving for Australian shoppers — zero conversion, zero math, zero stress. Your AU 24 body wears a UK 24. That's it. That's the whole guide."
While the numbers are identical, the fit can differ. UK plus size brands are designed for the British body type and climate — which means slightly different proportions, fabric weights, and design priorities compared to Australian brands. Here's what to expect from different types of UK retailers.
Pro tip: UK plus size brands offer a significantly wider size range than Australian brands, particularly above AU 28-30. UK fabrics tend to be heavier and warmer — perfect for Australian winters but may need to be worn seasonally. UK brands also cut with slightly less room through the hip than Australian brands at the same numerical size. For detailed comparisons, explore our plus size brand reviews.
UK size charts typically use inches, though many major retailers now include dual measurements (cm and inches). Since the sizes are numerically identical to Australian sizes, your measurements are the real key to a perfect fit — especially given the different fabric weights and cuts.
- ✓ Check the measurement system: Look for "cm" or "in" labels. UK charts increasingly use both. If only inches are shown, divide your cm measurement by 2.54.
- ✓ Bust: UK brands cut with slightly less room than Australian brands at the same size. If you're between sizes in Australian brands, you may prefer the larger UK size for woven fabrics.
- ✓ Hip: The key measurement difference. Australian brands cut more generously through the hip. If Australian trousers fit perfectly, UK trousers at the same numerical size may feel slightly snug through the hip and thigh.
- ✓ Fabric weight: UK garments use heavier fabrics than Australian equivalents. A UK "summer dress" may be too warm for Australian summer. Consider the season when ordering.
Your AU size is your UK size — so your existing measurements already work. The key differences are fabric weight (heavier in the UK) and hip cut (slightly narrower in UK brands). If you've found Australian brands generous through the hip, UK brands at the same numerical size may feel more fitted — this is intentional, not a sizing error.
Australia and the UK are in opposite hemispheres — which means the seasons are reversed. This creates one of the most powerful shopping advantages for Australian plus size fashion lovers.
- ❄️ Shop UK winter during Australian summer (December-February): While Australia swelters, UK retailers are launching coats, knitwear, and cold-weather collections. You can shop winter styles at full price or catch end-of-season clearance in January — perfect for Australian winter planning or trips to colder climates.
- ☀️ Shop UK summer during Australian winter (June-August): Access sundresses, swimwear, and resort collections while Australia is cold. UK summer clearance in August-September offers incredible deals just as Australian weather starts warming up.
- 💰 Boxing Day becomes Mid-Year Sale: UK Boxing Day sales (December 26) happen during Australian summer — you can shop winter clearance at peak discount while wearing shorts. UK summer sales (June-July) align with Australian winter — perfect for stocking up ahead of the season.
Shopping from the UK is relatively straightforward for Australian customers — the identical sizing removes the biggest barrier. But there are still traps to avoid.
- ⚠ Forgetting about currency conversion. UK prices are in GBP, not AUD. The exchange rate fluctuates: 1 GBP ≈ 1.90-2.00 AUD. A £50 dress is approximately AU$95-100. Always check the current rate before ordering.
- ⚠ Not accounting for fabric weight. UK "summer" clothes are designed for British summers (rarely above 25°C). They may be too heavy for Australian summer heat. Read fabric descriptions carefully — look for linen, cotton, and viscose for Australian conditions.
- ⚠ Underestimating shipping time. Standard shipping from the UK to Australia takes 10-21 business days. Express reduces this to 5-10 days. Factor delivery time into seasonal shopping — order winter pieces in September-October for June-August delivery.
- ⚠ Assuming all UK retailers ship to Australia. Some UK plus size boutiques only ship domestically or within Europe. Major UK plus size brands generally ship internationally. Always check before building a cart.
Returning items to UK retailers from Australia involves international shipping and longer processing times. Understanding the landscape before ordering is essential.
Major UK retailers: Large UK plus size brands generally offer international returns with reasonable policies. Return shipping from Australia to the UK typically costs AU$25-45 and takes 2-4 weeks. Refunds are processed in GBP, so the credited amount may vary with exchange rate fluctuations. Most retailers require items returned within 30 days with tags attached.
UK 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 UK Winter Coat. It's January in Australia — peak summer. You're an AU 24 and find a wool coat from a UK plus size specialist at 50% off in the Boxing Day sales. Your AU 24 is a UK 24 — identical. UK winter coats are designed for genuine cold — this will be warm enough for Australian winter or trips to colder climates. The heavier fabric means the UK 24 may feel slightly more fitted than your Australian 24 in lighter fabrics — but for a coat, this is the intended fit.
Scenario 2: The UK Summer Dress. It's July in Australia — mid-winter. You find a beautiful cotton sundress from a UK plus size brand on clearance. Your AU 22 = UK 22. UK summer dresses are designed for milder temperatures — this cotton dress will be perfect for Australian spring and autumn, and comfortable for summer if the fabric is lightweight. At clearance prices, you're getting next season's wardrobe at a fraction of retail.
Yes — completely identical. An AU 22 is a UK 22. There is no conversion needed between Australian and UK clothing sizes. The numerical system is the same, inherited from British colonial sizing standards. This makes the UK the easiest international market for Australian plus size shoppers. You'll often see dual "AU/UK" 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 developed its own sizing system independently after gaining independence, which diverged from the British standard. This is why US sizes run 2 sizes smaller than AU/UK sizes (US 18 = AU/UK 22).
The numerical size is identical, but the fit can differ. UK plus size brands tend to cut with slightly less room through the hip and thigh compared to Australian brands at the same size. UK fabrics are heavier and warmer, designed for a colder climate. If you're between sizes in Australian brands, the same numerical UK size may feel slightly more fitted — especially in non-stretch woven fabrics.
UK plus size fashion offers several unique advantages for Australian shoppers: (1) Zero size conversion — your AU size works immediately. (2) Wider size range — UK brands typically go through UK 32-36+, well beyond most Australian size ceilings. (3) Reversed seasons — access winter styles in summer and summer clearance in winter. (4) Different aesthetic — UK design emphasizes different fabrics, prints, and silhouettes that complement Australian plus size wardrobes.
Australian customs applies GST (10%) to imported goods, which should be collected at the point of sale by the retailer for orders under AU$1,000. For orders over AU$1,000, you may need to pay GST plus customs duties upon import. The Australia-UK Free Trade Agreement (signed 2021, implemented 2023) is progressively eliminating tariffs on most goods, including apparel. Always check the retailer's Australian shipping page for current information.
Standard international shipping from the UK to Australia typically takes 10-21 business days. Express shipping options can reduce delivery to 5-10 business days at a higher cost. Some major UK retailers operate Australian distribution centers or partner with local logistics providers for faster delivery. During UK holiday periods (December), expect additional delays of 5-7 days. Plan seasonal shopping accordingly — order winter pieces in September-October, summer pieces in March-April.
UK plus size fashion is the most accessible international market for Australian shoppers — period. Zero size conversion, a wide size range that often exceeds Australian offerings, the strategic advantage of reversed seasons, and a distinct design aesthetic that emphasizes different fabrics and silhouettes. Your AU 26 body wears a UK 26. That's the whole conversion guide.
The differences that matter aren't in the size label — they're in the fit (slightly more fitted through the hip), the fabrics (heavier and warmer), and the timing (winter coats in January, summer dresses in July). Armed with your existing AU size and an understanding of these nuances, you're ready to explore one of the world's most established 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 Australian and UK 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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