UK / Australia size to US size Converter

1 UK equals -3 US, and 1 US equals 5 UK. Enter a value in either box to convert uk / australia size to us size and back. Formula: US = UK - 4; EU = UK + 28; FR = UK + 30; IT = UK + 32 (women's dresses, typical size chart offsets).

· CalcFlow Editorial

12 UK = 8 US

Approximate: Clothing sizes are approximate. The offsets between countries are the common ones used on size charts, but each brand cuts its own sizes, so check the brand chart and the garment measurements.

Results shown are estimates for informational purposes only. Nothing on CalcFlow is financial, tax, legal, or medical advice. Always consult a qualified professional before making important decisions.

UK / Australia size to US size Conversion Table

UK / Australia sizeUS size
0 UK-4 US
2 UK-2 US
4 UK0 US
6 UK2 US
8 UK4 US
10 UK6 US
12 UK8 US
14 UK10 US

US size to UK / Australia size Conversion Table

US sizeUK / Australia size
0 US4 UK
2 US6 UK
4 US8 UK
6 US10 UK
8 US12 UK
10 US14 UK
12 US16 UK
14 US18 UK

Worked example: 10 UK = 6 US. A US size 8 dress is a UK 12, an EU 40, a French 42 and an Italian 44.

Need other units? Open the full Women's Clothing Size Converter.

Formula

US = UK - 4; EU = UK + 28; FR = UK + 30; IT = UK + 32 (women's dresses, typical size chart offsets)

Understanding Women's Clothing Size Conversion

Women's clothing sizes are not standardized worldwide. Each country uses its own numbering, but for dresses and tops most size charts line up with fixed offsets: a UK size 10 is a US 6, an EU 38, a French 40 and an Italian 42. These offsets are a convenient starting point. Garments from different brands, and from different decades, can fit a size apart even inside one country.

Tips and Best Practices

  • 1Use bust, waist and hip measurements against the brand's chart rather than only the converted number.
  • 2Check the garment's fabric: stretch fabrics fit differently from woven ones.
  • 3When between sizes, read recent customer reviews about whether a brand runs small or large.

Real-World Example

A US size 8 dress is a UK 12, an EU 40, a French 42 and an Italian 44.

Common Mistakes to Avoid

  • Assuming the same size number fits the same in every brand.
  • Ordering by the number alone without checking measurements.
  • Applying women's offsets to men's sizes.

How to Use

  1. Type a number in the UK / Australia size box.
  2. The US size result appears instantly; you can also edit the US size box to convert backwards.
  3. Use the swap button to reverse the direction and Copy result to copy the answer.

Frequently Asked Questions

Q

How many us size are in 1 UK?

1 UK equals -3 US.
Q

How many uk / australia size are in 1 US?

1 US equals 5 UK.
Q

What is the formula to convert uk / australia size to us size?

US = UK - 4; EU = UK + 28; FR = UK + 30; IT = UK + 32 (women's dresses, typical size chart offsets).
Q

What is a UK size 12 in EU?

A UK 12 is about an EU 40.

Sources: Common retailer and fashion-industry size chart conventions (US = UK - 4, EU = UK + 28, IT = UK + 32). Approximate by nature.