RING SIZE GUIDE
Ring Size & Measurement Guide
Compare international sizes, measure an existing ring, or request a complimentary ring sizer.
01SIZE REFERENCE
Ring size chart
Select a row to use it in the converter below.
HK sizes follow our ring-sizer chart. Other sizes are matched by inner diameter; ≈ means the nearest size.
02INTERACTIVE TOOL
Convert & match your ring size
I know my…
Have a ring? Measure across the inside, then enter its inner diameter.
YOUR CONVERTED SIZE
Match the circle to the inner edge
Calibrate your screen, then place your ring on it. Fine-tune with + / −.
Calibrate first to match your ring at actual size.
03MEASURING GUIDE
Ring measurement essentials
Measure the inside
Choose a round ring that fits comfortably. Measure its widest inner diameter.
Measure at different times
Finger size can vary with temperature and daily activity. Measure when your hands feel normal, then check again at another time.
Consider width and stacking
Wide bands and stacked rings can feel tighter. Try your chosen style at one of our showrooms.
Conversions and screen matching are size references. Trying on a ring helps confirm the best fit.
04MEASURE AT HOME
Your complimentary ring sizer
No suitable ring to measure? We can send you a complimentary ring sizer to measure your finger at home.
What is a ring sizer?
An adjustable measuring strip marked with ring sizes. Loop it around the finger you intend to wear your ring on, then adjust the fit.
Free sizer. Free standard post.
Available in Hong Kong, Macau, Taiwan and Malaysia. Complete your delivery details to request one. Courier delivery is charged separately.
HOW TO USE YOUR RING SIZER
Loop around your finger
Wrap the strip around your chosen finger and pass its end through the opening.
Adjust the fit
Tighten to fit, then loosen slightly. Check that the loop can pass over your knuckle.
Read your size
Read the size at the arrow. Take a photo if you would like our specialist to help confirm the reading.
Keep a record of your size and the sizing standard used so we can help confirm the fit.
| HK | US | UK | Japan | Inner diameter (mm) | Circumference (mm) |
|---|---|---|---|---|---|
| 4 | 3 | F | ≈ 4 | 14.1 | 44.3 |
| 5 | 3.25 | F½ | ≈ 5 | 14.3 | 44.9 |
| 6 | 3.5 | G | ≈ 5 | 14.5 | 45.6 |
| 7 | 4 | H | ≈ 7 | 14.9 | 46.8 |
| 8 | 4.5 | I | ≈ 8 | 15.3 | 48.1 |
| 9 | 5 | J | 9 | 15.7 | 49.3 |
| 10 | 5.25 | J½ | ≈ 10 | 15.9 | 50.0 |
| 10.5 | 5.5 | K | ≈ 10 | 16.1 | 50.6 |
| 11 | 5.75 | K½ | ≈ 11 | 16.3 | 51.2 |
| 12 | 6 | L | ≈ 11 | 16.5 | 51.8 |
| 13 | 6.5 | M | ≈ 13 | 16.9 | 53.1 |
| 14 | 7 | N | ≈ 14 | 17.3 | 54.3 |
| 15 | 7.25 | N½ | ≈ 14 | 17.5 | 55.0 |
| 16 | 7.5 | O | 15 | 17.7 | 55.6 |
| 17 | 8 | P | ≈ 16 | 18.1 | 56.9 |
| 18 | 8.5 | Q | ≈ 17 | 18.5 | 58.1 |
| 19 | 8.75 | Q½ | ≈ 18 | 18.8 | 59.1 |
| 20 | 9 | R | 19 | 19.0 | 59.7 |
| 21 | 9.5 | S | 20 | 19.4 | 60.9 |
| 21.5 | 10 | T | ≈ 21 | 19.8 | 62.2 |
| 22.5 | 10.5 | U | ≈ 22 | 20.2 | 63.5 |
| 24 | 11 | V | ≈ 24 | 20.6 | 64.7 |
| 25 | 11.5 | W | 25 | 21.0 | 66.0 |
| 26 | 12 | X | 26 | 21.4 | 67.2 |