Clothing Size Converter
Convert a women’s apparel size between US, UK, EU, and numeric bust-based sizing.
Equivalent sizes
This is a general reference chart, not a single global standard — brands commonly size a step or more off it, especially between US and EU labeling. When in doubt, convert from an actual bust measurement.
Reading a size conversion chart
Size conversion charts are a general reference, not a guarantee — they line up how sizing conventions in different regions tend to relate to each other, based on the same underlying body measurement. When you can, convert from an actual measurement (bust, in this case) rather than a size label you already own, since the label itself may reflect one brand's particular fit rather than the regional norm.
This is especially useful when buying from an overseas retailer, comparing a size across a US and a UK or EU brand, or figuring out where a bust-based numeric size fits into the more familiar 0-16 US scale.
Frequently Asked Questions
How does the size conversion work?
The converter looks up your size on a reference chart that lines up US, UK, and EU numeric sizes against a bust-based numeric size (the bust circumference in inches, rounded, as used by brands that size by chest measurement rather than a dress-size number). Enter any one of the four and it returns the matching row.
Why does the same size feel different between a US and a European brand?
There's no single legal or universal standard tying these numbers together — each region's sizing convention evolved separately, and individual brands add their own vanity sizing on top. A US 8 lining up with a UK 12 and an EU 40 is a common industry reference, but you'll find brands that run a size off in either direction.
What is a 'numeric bust-based' size?
Some activewear and fitted tops are labeled by chest circumference rather than a dress-size number — a size 38 meaning roughly a 38-inch bust, for example. It's most useful when a garment's fit depends mainly on chest measurement rather than overall dress proportions.
My measured bust doesn't match any row exactly — what do I do?
The converter returns the closest row on the chart. If your bust measurement falls between two rows, it's worth sizing up rather than down for a fitted top, and checking the specific brand's chart if you're between sizes on a purchase that matters.
Does this account for cup size or body shape?
No — this chart converts overall garment size using bust circumference as the anchor point, the same way most size charts do. It doesn't account for cup size, torso length, or other proportions, so for anything bust-fitted, like a bra or structured top, a size-specific calculator or a proper fitting will be more accurate.
This tool is not professional fitting advice — it's a general reference chart. Brands frequently size a step or more off it, so treat the result as a starting point, not a guarantee.