💍 Find Your Perfect Ring Size Anywhere in the World
When choosing an engagement ring, wedding band, or moissanite jewelry, selecting the correct ring size is just as important as choosing the design. A well-fitted ring ensures comfort, security, and elegance for daily wear.
At Luma Moissanite, we understand our customers shop globally—from the United States, Canada, United Kingdom, Australia, New Zealand, Germany, France, Spain, Italy, Japan, Korea, UAE, Saudi Arabia, Brazil, Argentina, and beyond. That’s why we created this comprehensive international ring size guide to help you shop online with confidence.
📏 How to Measure Your Ring Size at Home
1. String or Paper Strip Method
Cut a thin strip of paper (around 5 mm wide) or use a piece of string.
Wrap it around the base of your finger.
Mark the spot where it overlaps.
Measure the length in millimeters (mm).
Use the chart below to find your size.
2. Measure an Existing Ring
Select a ring that already fits you well.
Measure the inside diameter (mm) with a ruler or digital caliper.
Match it with the conversion chart.
3. Tips for Accuracy
Measure your finger at the end of the day (fingers may swell slightly).
Avoid measuring when your hands are cold (fingers shrink slightly).
If your measurement falls between two sizes, always choose the larger size for comfort.
Consider band width: wider bands (≥5mm) may feel tighter, so size up half a size.
- 📊 International Ring Size Conversion Chart
Inside Diameter (mm) Circumference (mm) US / Canada UK / Australia EU (ISO) Japan Korea China 14.0 mm 44.0 mm 3 F 44 4 5 6 14.8 mm 46.5 mm 4.5 H 46.5 7 9 9 15.7 mm 49.3 mm 5 J½ 49 9 11 10 16.5 mm 52.0 mm 6 L½ 52 12 14 12 17.3 mm 54.5 mm 7 N½ 54.5 14 16 15 18.1 mm 57.0 mm 8 P½ 57 16 18 17 19.0 mm 59.5 mm 9 R½ 59.5 18 20 19 19.8 mm 62.0 mm 10 T½ 62 20 23 22 20.6 mm 64.5 mm 11 V½ 64.5 23 25 24 21.4 mm 67.5 mm 12 X½ 67.5 25 27 26 22.2 mm 70.0 mm 13 Z½ 70 27 29 28 💡 This chart includes the most popular sizes. Custom ring sizing is available for special orders.
🌐 Regional Ring Size Standards
United States & Canada: Uses numeric sizing (3–13).
United Kingdom & Australia: Uses alphabetic sizing (F–Z).
Europe (ISO standard): Based on circumference in millimeters.
Japan, Korea, China: Numeric systems, but different from US sizing.
Middle East (UAE, Saudi Arabia): Typically follow European sizes.
By offering a universal chart, we make it easy for our customers worldwide to select their moissanite engagement rings, wedding bands, eternity rings, and anniversary gifts without confusion.
💡 Additional Tips for Choosing the Right Size
Engagement Surprise? Ask a friend or family member to borrow a ring your partner wears on the same finger.
Swollen fingers? Hot weather or physical activity can temporarily enlarge your finger.
Multiple rings? For stacking rings, size up slightly for a comfortable fit.
Professional measurement: Visit a local jeweler for the most precise measurement.
💍 Why Choose Luma Moissanite Rings
Every ring from Luma Moissanite is handcrafted with precision, ensuring the gemstone setting and band fit comfortably. Whether you’re buying an engagement ring, wedding band, promise ring, or anniversary gift, knowing your ring size helps you shop online with confidence.
We proudly serve customers across the US, UK, Canada, Australia, New Zealand, Japan, Korea, Germany, France, Spain, Italy, Brazil, Argentina, UAE, Saudi Arabia, and more.