Dress Size Converter: US, UK, EU, AU, FR, IT, DE & JP Chart

Shopping for a dress from a British, European, Australian or Japanese brand and the sizes look like a foreign language? They are — almost. A US 8 is a UK 12, an EU 40, an Italian 44 and a Japanese 11, and none of that is guesswork once you have the right row of the chart. This dress size converter does the translating for you: pick the size and system you know, and it returns the full row across US, letter, UK, EU, AU, FR, IT, DE and JP sizing.

If you do not know your size in any system, skip the labels entirely. The measurement finder in the same tool takes your bust, waist and hip measurements — in inches or centimetres — and suggests the US size that fits your fullest point, with its complete international row. It is the fastest way to order from an overseas brand with confidence instead of hope.

On this page:

• Dress size converter tool
• How dress sizes work
• How to measure bust, waist and hips
• Vanity sizing, explained honestly
• Letter sizes vs numeric sizes
• Why your converted size sometimes does not exist
• International shopping tips
• Full dress size conversion chart
• Keep exploring
• Frequently asked questions

Dress Size Converter

How to read the result: the converter shows one complete row of the standard women’s chart. The system you converted from is highlighted, and every other box is the same dress size expressed in that country’s system. If you used the measurement finder, the suggested size is the one that fits your largest measurement — the rule dressmakers use, because extra room at the waist can be tailored away but a tight bust cannot be let out.

How Dress Sizes Work

Every sizing system is anchored to body measurements, but each country picked a different starting number and step. US numeric sizes run in even numbers (0, 2, 4, 6…) and UK sizes sit exactly four numbers higher, so the conversion is a reliable +4: US 8 = UK 12. Australian sizes copy the UK numbers exactly. European (EU) sizes for the same row are the US number plus 32, so a US 8 is an EU 40. French sizes on most modern charts match the EU numbers, German sizes sit two below EU, Italian sizes run four above EU, and Japanese sizes use their own odd-number ladder where a US 8 is an 11.

Because all of these ladders step in twos and stay in a fixed relationship, one row of the chart is all you ever need. Find any size you own that fits well, read across, and you have your size in all nine systems. The converter above is simply that row, looked up instantly.

How to Measure Bust, Waist and Hips

Bust

Wear a non-padded bra and stand relaxed. Run a soft tape around the fullest part of your bust, passing under your arms and across your shoulder blades. Keep the tape level and snug but not tight — you should be able to slip one finger underneath.

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Waist

Measure your natural waist: the narrowest point of your torso, usually just above your belly button and below your ribcage. If you are unsure, bend to one side — the crease that forms is your natural waist. Breathe normally and measure on a relaxed exhale, never holding your stomach in.

Hips

Stand with your feet together and measure around the fullest part of your hips and bottom, keeping the tape level all the way around. For most women this is noticeably lower and wider than where low-rise jeans sit, so do not measure at your waistband.

Vanity Sizing, Explained Honestly

Vanity sizing is the industry’s open secret: brands gradually relabel garments so that a larger dress carries a smaller number, because shoppers feel good — and buy more — when they fit a size 8 instead of a 10. The dress a woman bought as a US 12 in the 1980s may carry a US 6 label today even though her body and the garment are nearly the same. There is no law forcing brands to follow the standard chart, so each label drifts on its own schedule.

The practical takeaway is not to distrust converters — the relationships between systems (US +4 = UK, US +32 = EU) hold steady — but to distrust any single brand’s label in isolation. Convert first to get your row, then sanity-check the brand’s own size chart against your actual bust, waist and hip measurements before you pay for shipping across an ocean.

Letter Sizes vs Numeric Sizes

Letter sizes (XXS, XS, S, M, L, XL) compress two numeric sizes into one label, which is why they feel vague: an M on our chart spans US 6–8 and an L spans US 10–12. Brands love letters for knit dresses, wrap styles and anything with stretch, because the fabric absorbs the difference. For structured dresses — a fitted sheath, a tailored shirt dress, anything with a set waist seam — numeric sizing is far more precise, and it is worth choosing brands that offer it. When a dress is only sold in letters, use your measurements: if your bust or hip sits at the top of a letter’s range, take the next letter up.

Why Your Converted Size Sometimes Does Not Exist

It can be baffling to convert perfectly and then find the size missing from the dropdown. Brands skip sizes for ordinary commercial reasons: some ranges start at a US 2 or 4 and never cut a 0; many stop at 14 or 16; Japanese labels often end at 13 or 15; Italian boutiques may only stock up to a 48. Others cut only every second size in a style. A missing size does not mean your conversion is wrong — it means that brand chose not to make your row. Your options are the neighbouring size in a forgiving fabric, a tailor for the larger size, or a different brand that cuts the full ladder.

International Shopping Tips

Convert, then verify. Use this converter to get your row, then compare your three measurements with the retailer’s own chart on the product page. If the two disagree, believe your tape measure.

Mind the return costs. A dress shipped from the EU, UK or Japan can cost as much to return as it did to buy. When a brand offers free returns, ordering your converted size and one neighbour size is a sensible strategy; when it does not, measure twice and order once.

Read the fabric. A converted size in a stretch ponte, jersey or wrap style has room for error. The same size in a non-stretch satin or a fitted bodice has none. Let the fabric content, not optimism, decide whether to size up.

Save your row. Once you know your full row — for example US 8, UK 12, EU 40, IT 44, JP 11 — keep it in your phone’s notes. It turns every future international purchase into a ten-second check instead of a research project.

Full Dress Size Conversion Chart

Here is the complete standard women’s dress chart the converter uses, including the bust, waist and hip measurements (in inches) each US size is built on. Multiply inches by 2.54 for centimetres.

Keep Exploring

Browse all of our free style tools and calculators, convert your footwear with the Shoe Size Converter, discover your most flattering silhouettes with the Body Shape Calculator, and get your foundation right with the Bra Size Calculator. Then put your new size to work with our quiet luxury outfits for women over 40, casual summer outfit ideas and old money summer outfit ideas.

Frequently Asked Questions

What is a US size 8 in UK, EU and Australian sizes?

A US women’s size 8 converts to a UK 12, an EU 40 and an Australian 12. On the same row you will also find FR 40, IT 44, DE 38 and JP 11. Australian dress sizes use the same numbers as UK sizes, which makes shopping Australian brands straightforward once you know your UK size.

Why does my converted dress size sometimes not exist in a store?

Not every brand cuts every size. Some labels skip odd steps, start their range at a US 2 or 4, end at a 14, or use their own in-between sizing, so a converted size like a JP 23 or an IT 56 may simply not be produced. When your exact size is missing, choose the nearest larger size in structured styles and have the waist taken in, or look for the same dress in a stretch or wrap fabric that tolerates a half-size difference.

Are Australian dress sizes the same as UK sizes?

Yes. Australian women’s dress sizes use the same numbers as UK sizes, so a UK 12 is an AU 12. Both run four numbers above the US size, which is why a US 8 becomes a 12 in both systems. Always double-check the individual brand’s chart, because vanity sizing can still shift the fit by a size either way.

What should I do if I am between two dress sizes?

Size up, especially for fitted bodices, sheath dresses and anything without stretch. A dress that is slightly large at the waist can be taken in cheaply, but there is no alteration that adds room across a tight bust or hips. For wrap dresses, shirt dresses and knit styles, you can usually take the smaller size because the fabric and cut are more forgiving.

Why does the same size fit differently from brand to brand?

Because of vanity sizing: over the decades many brands have gradually relabelled larger garments with smaller size numbers so shoppers feel they fit a smaller size. A US 8 from one label can measure like a US 10 from another. That is why this converter works from standard measurements as well as labels, and why checking your bust, waist and hip against each brand’s own chart is the most reliable way to order.