Australian Clothing Size Conversion: Fit-First Guide

Australian clothing sizes are a starting point, not a measurement

For women's clothing, an Australian size is usually treated as equivalent to the same UK number and about four sizes above the US number: AU 10 roughly matches UK 10 and US 6. European conversion is commonly estimated by adding 28, making AU 10 roughly EU 38. These are shopping shortcuts, not guaranteed fit.

Adult clothing sizes are not consistent across Australian brands. Cut, target customer, fabric stretch, garment ease, and each label's own block can move the fit by a full size or more. The number gets you into the fitting room; the garment measurements decide whether it deserves to leave with you.

Women's Australian size conversion table

Use this table to identify the likely neighbourhood, then open the specific brand's chart.

Why “approximate” over the EU column? European labels also vary by country and brand, and international retailers sometimes publish their own conversion. If a product page disagrees with this general table, use its body and garment measurements—not whichever number is emotionally more flattering. Fabric has no access to your self-esteem.

Why the same Australian size fits differently

Brands use different fit blocks

A fit block is the base set of body proportions used to develop a range. Two labels can both call a garment size 12 while building for different bust, waist, hip, shoulder, or height relationships. Neither number reveals the shape behind it.

The garment includes ease

Ease is the difference between body measurement and garment measurement. A fitted woven shirt needs enough ease to move and breathe. An oversized shirt intentionally includes much more. Stretch leggings can measure smaller than the body because the fabric is designed to expand.

This is why comparing your 100 cm hip directly with a 100 cm trouser circumference can be misleading. In rigid fabric, that garment may offer no sitting room. In a stretch knit, it may be generous.

Fabric changes the tolerance

Woven cotton, linen, denim, and tailoring fabrics usually have less give than jersey or fabric containing elastane. A close size in a stretchy dress may be unwearable in a rigid jumpsuit. Check fibre content and product notes alongside the chart.

The intended silhouette changes everything

Relaxed, slim, boxy, cropped, and oversized are not decorative adjectives. They describe the design ease and proportions. A relaxed AU 10 can be wider than a fitted AU 12 without either label being wrong.

Body measurements versus garment measurements

A body chart tells you which size the brand recommends for your bust, waist, and hip. A garment chart tells you the actual dimensions of the finished item. The second is far more useful when you already own something that fits.

Suppose your best shirt measures 54 cm across the chest while lying flat. Doubled, that is a 108 cm garment circumference. If an online shirt lists a 106 cm finished chest, you know it will be slightly narrower before arguing with the size label.

Always confirm whether a flat measurement should be doubled. Shoulder width, sleeve length, garment length, and front rise are not doubled. Half-chest, half-waist, and half-hip usually are.

How to measure your body

Use a flexible tape over light clothing or underwear. Keep it level and comfortably close rather than pulling until it negotiates.

• Bust or chest: around the fullest point, with arms relaxed.
• Waist: around your natural waist, often where the torso creases when you bend sideways.
• Hip: around the fullest part of seat and hips, with feet together.
• Inseam: from the crotch seam down the inside leg to the desired hem.
• Shoulder: from one shoulder point to the other across the back.

Measure twice. If the results differ, the tape moved or your posture changed. Record centimetres because Australian charts commonly use them, and keep the date beside the numbers rather than treating them as a lifetime subscription.

Measure a garment you already like

Body measurements help select a size; comparison garments help select a silhouette. Choose an item with similar fabric and shape, fasten it, smooth it without stretching, and measure it on a flat surface.

For trousers, record the waistband, front rise, hip at the widest point, thigh, inseam, and leg opening. For tops and dresses, record chest, shoulder, sleeve, waist where shaped, hip, and total length.

A favourite stretch tee is a poor reference for a linen blazer. Compare like with like: woven shirt to woven shirt, high-rise jeans to high-rise jeans, and loose dress to loose dress.

Men's and unisex sizing

Men's trousers often use waist and inseam measurements in inches, but the labelled waist may still differ from the finished waistband. Shirts may use collar measurements or S–XXL labels, with brand-specific chest and sleeve charts.

Unisex sizing is not a universal neutral block. It often starts from a straighter or traditionally menswear-based cut, which can make shoulders, torso length, waist, and hip fit differently. Read the measurements and product description rather than automatically sizing down.

Letter sizes are the least convertible of all. One label's M can overlap another label's S or L. The alphabet looks simple because it has successfully hidden the numbers.

Jeans deserve their own check

Jeans may use AU dress sizes, inch waists, or brand-specific numbers. A “28” usually points toward a nominal 28-inch waist, but rise, stretch, and vanity sizing affect the actual fit.

Check:

• whether the waist measurement is body or garment;
• high, mid, or low rise;
• stretch percentage or fabric composition;
• relaxed, straight, slim, or wide leg;
• inseam and whether the model wears a regular or tall length.

Rigid denim often eases with wear but does not perform miracles. Buying a pair you cannot comfortably fasten is not a break-in strategy; it is an expensive argument with a button.

What to do when measurements span sizes

Most bodies do. Choose for the part the garment cannot easily accommodate or alter.

• For a fitted woven dress, prioritise the largest relevant bust, waist, or hip measurement.
• For trousers, prioritise hip and rise if the waist can be altered.
• For a jacket, fit shoulders first; shoulder reconstruction is rarely the cheap fix.
• For an oversized garment, compare finished measurements to a piece whose volume you enjoy.
• For stretch garments, follow the brand's stretch and fit notes rather than subtracting a size by instinct.

Read reviews for recurring fit information—short torso, narrow sleeve, generous waist—not for declarations that a garment is simply “true to size.” True to whose size is the entire problem.

Shopping international labels in Australia

Use the retailer's local chart when it exists. A US label sold by an Australian retailer may display converted AU sizing on the product page while the sewn tag retains the original US number. Save a screenshot of the chart with the order so you can identify which system you used if a return is needed.

Check return costs and the allowed return window before ordering multiple sizes. Those details change and belong to the current retailer policy, not a general guide.

For local labels, our Australian fashion overview explains why “Australian designed” does not necessarily mean locally made—and why the sewn-in label still does more useful work than the homepage mood board.

The fit-first rule

Convert the number once, then stop worshipping it. Use the brand chart, compare finished garment measurements, account for fabric and intended ease, and choose the size that supports the silhouette you want.

If you are shopping in person, Brisbane's precincts in our shopping guide give you the great advantage of a fitting room. Online, your best defence is a tape measure and one well-fitting reference garment. Both are more trustworthy than the idea that every size 12 signed the same treaty. Browse more practical help in Style Guides.