This section contains online converters and reference tables for quick conversion of clothing, shoe, and ring sizes between various international standards (US, Europe, UK, Asia).
- Ring size converter
- Convert finger diameter or circumference to US, European, UK, and Japanese sizes.
- Shoe size converter
- Convert foot length or known shoe size to EU, US, UK, and CN sizes for men, women, and kids.
- Clothing size converter
- Convert chest circumference to EU, US, UK, INT, and CN sizes for men's and women's clothing.
- Children's Clothing Size Converter
- Convert a child's height to EU/UA, US, and UK clothing sizes.
- Skates and Rollerblades Size Calculator
- Size conversion for hockey, figure skates, and rollerblades.
- Helmet Size Calculator
- Find your helmet size by head circumference — cycling, ski, or roller helmet.
- Ski and Snowboard Size Calculator
- Find the recommended ski or snowboard length based on your height — for adults and children.
- Hat Size Calculator (Hats, Caps)
- Find your hat size by head circumference.
- Bra Size Calculator
- Find your bra size by underbust and bust measurements.
Online Shopping Tips
- Chinese Sizes (AliExpress, Shein, etc.). Asian clothing sizes often run 1-2 sizes smaller compared to European ones. Always check the specific seller's sizing charts or read customer reviews.
- Shoes. The most accurate way to choose shoes online is to measure your foot length in centimetres and use that measurement (often denoted as CM or JP).
- Brand Differences. Even within the same system (e.g., US), sizing charts of different brands (Nike, Adidas, Puma) can vary by half a size.
Frequently Asked Questions about Sizes
How do I convert a US shoe size to European (EU) size?
Ukrainian shoe sizes follow the European (EU) standard. To convert a men's US size to EU, you generally add 33 (e.g., US 9 + 33 = EU 42). For women's shoe sizes, the difference is roughly 31 (e.g., US 7 + 31 = EU 38). The most precise method is to refer to our shoe size correspondence chart using your actual foot length in centimetres.
Why are Asian clothing sizes smaller than European sizes?
Asian sizing standards (CN, JP) are built around different average body proportions (height and build). As a result, Chinese garments often run 1 to 2 sizes smaller than equivalent EU or international (XS–XXL) sizes. When purchasing apparel from Asian brands, it is highly recommended to rely on your actual body measurements in centimetres.
What are "sister sizes" in bra fitting?
Sister sizes are combinations of band size and cup letter that share the exact same internal cup volume. For instance, 70C, 75B, and 80A are sister sizes. If a 75B feels too tight around your ribs but the cups fit perfectly, an 80A will give you the same cup capacity with a wider, more comfortable band.
How do I find my correct hat or helmet size?
Both sizes are based on your head circumference in centimetres. However, hats are typically fitted with slightly more ease (if your measurement falls between sizes, size up), whereas a helmet must fit snugly and securely for safety reasons. You can use our dedicated hat and helmet calculators to find the perfect fit.