Ring Size
If you do not know the size of the ring you are wearing, it would be best to take some measurements at a jewelry store. Alternatively, you can measure the inside diameter of one of your rings and map it to the table below.
| Inner Diameter | Size |
| 16 mm | 50 10 |
| 16.5 mm | 52 12 |
| 17.2 mm | 54 14 |
| 17.8 mm | 56 16 |
| 18.5 mm | 58 18 |
| 19.2 mm | 60 20 |
| 19.8 mm | 62 22 |
| 20.4 mm | 64 24 |
How do I measure the inside diameter of a ring?
- Get a ring that puts you on the finger you want to wear.
- Place it on a flat surface.
- Lean on a measuring tape.
- Measure how many millimeters are the line from one side of the ring to the other (inside only).
- Based on this measurement, which is shown in the first column of the table, find the appropriate size.

What should I look out for in the ring numbers?
- Each finger of each hand usually has a different size. Make sure you measure the finger on which you intend to wear the ring.
- Your fingers sometimes swell from the heat or work, so the numbers may have a slight deviation.
- It is generally preferable for a ring to be slightly larger than slightly larger than the exact number.
- Therefore, if your measurement corresponds to an intermediate number from those in the table, select the larger one.
- It is not an exaggeration to do the measurement several times, or at different times, precisely because of this change in the fingers. The ring you choose should fit you normally, without hurting or squeezing you, but also without leaving your hand.
- In general, wide rings do not allow the finger to move, so you may need a larger number than usual.


