International Size Converter
Convert clothing and shoe sizes between US, UK, EU, and international sizing systems. Find your size when shopping from different countries.
How to Use This Calculator
- Choose your method: Convert a known size OR find your size by body measurements
- Select clothing category: Women’s, Men’s, Kids’, Shoes, Rings, or Bras
- Enter your size or measurements based on chosen method
- Click Convert Size to see results across all international sizing systems
- Share or bookmark your results - the URL automatically saves all inputs!
📐 How Would You Like to Find Your Size?
Already know your size in one system? Convert it to other international sizing systems.
👕 What Are You Shopping For?
🔄 Select Your Known Size
🌍 Understanding International Sizing
Clothing sizes vary significantly between countries. A US size 8 might be a UK 12 or EU 40. This calculator helps you convert between US, UK, EU, Australian, Japanese, Italian, and other sizing systems so you can shop confidently from international retailers.
📊 Quick Reference: Women's Clothing
| US | UK | EU | AU |
|---|---|---|---|
| XS (2) | 6 | 34 | 6 |
| S (4-6) | 8-10 | 36-38 | 8-10 |
| M (8-10) | 12-14 | 40-42 | 12-14 |
| L (12-14) | 16-18 | 44-46 | 16-18 |
| XL (16-18) | 20-22 | 48-50 | 20-22 |
👟 Quick Reference: Shoe Sizes
| US Women | US Men | UK | EU | cm |
|---|---|---|---|---|
| 6 | - | 3.5 | 36 | 22.5 |
| 7 | - | 4.5 | 37.5 | 23.5 |
| 8 | 6.5 | 5.5 | 38.5 | 24.5 |
| 9 | 7.5 | 6.5 | 40 | 25.5 |
| - | 9 | 8.5 | 42.5 | 27 |
| - | 10 | 9.5 | 44 | 28 |
📏 How to Take Accurate Measurements
- Bust/Chest: Measure around the fullest part, keeping tape parallel to floor
- Waist: Measure at your natural waistline (narrowest point)
- Hips: Measure around the fullest part, typically 7-9 inches below waist
- Foot Length: Stand on paper, trace foot, measure heel to longest toe in cm
- Ring Size: Wrap string around finger, mark overlap, measure in mm
Pro Tip: Measure at the end of the day when feet are largest, and always measure both feet/hands and use the larger measurement.
👙 Understanding Bra Sizing
Bra sizes combine a band size (the number) with a cup size (the letter).
- Band: Measure snugly around your ribcage, directly under your bust
- Bust: Measure around the fullest part of your bust
- Cup: The difference between bust and band determines cup size (1"=A, 2"=B, 3"=C, etc.)
Sister Sizes: 32D, 34C, and 36B all have the same cup volume but different band fits!
⚠️ Important Size Considerations
- Sizes vary between brands, even within the same country
- Asian sizing typically runs 1-2 sizes smaller than Western sizing
- Vintage clothing often runs smaller than modern sizes
- Always check the specific brand's size chart when available
- Consider fabric stretch - fitted items may need sizing adjustments
- When between sizes, consider the garment style (fitted vs. loose)
💡 International Shopping Tips
- Check origin: European brands use EU sizing even when sold in the US
- Read reviews: Other customers often mention if items run large/small
- Know return policies: International returns can be expensive
- Order multiple sizes: When unsure, order 2-3 sizes if returns are easy
- Save your measurements: Bookmark this calculator with your data in the URL
🔗 Save & Share Your Calculation
Your size data is automatically saved in the URL. You can bookmark this page to quickly convert sizes later, or use the Share button to send your size info to friends or save for reference. All values are restored when you return!