Clothing Size International Converter Formula

Understand the math behind the clothing size international converter. Each variable explained with a worked example.

Formulas Used

UK Size

uk_size = us_size + 4

EU Size

eu_size = us_size + 32

Italian Size

it_size = us_size + 34

Variables

VariableDescriptionDefault
us_sizeUS Size (Women)8

How It Works

International Clothing Size Conversion

Clothing sizes vary by country. This converter uses the standard offset for women's clothing.

Conversion Formulas

UK Size = US Size + 4

EU Size = US Size + 32

Italian Size = US Size + 34

These are approximate guidelines. Actual fit varies by brand, style, and body proportions. Always check the specific brand's size chart when possible.

Worked Example

Converting US women's size 8 to international sizes.

us_size = 8
  1. 01UK size = 8 + 4 = 12
  2. 02EU size = 8 + 32 = 40
  3. 03Italian size = 8 + 34 = 42

Frequently Asked Questions

Are these conversions exact?

They are standard approximations. Brand-specific sizing can vary by 1-2 sizes. European brands especially vary, so always check the brand's own chart.

How do men's sizes convert?

Men's sizes are typically simpler: US and UK use the same chest/waist measurements. EU adds 10 to the US size (US 40 = EU 50).

What about Asian sizes?

Asian sizes (Japan, Korea, China) run 1-3 sizes smaller than Western equivalents. A US 8 might be an Asian L or XL depending on the brand.