Ring sizing guide
Simple steps how to measure your ring size at home
*Best and most accurate way of knowing your ring size is going to a professional jeweler or any jewelry store and get your fingers measured (usually it is free of charge)
Measuring ring inside diameter
- Find a ring that fits you perfectly. Could be any ring you find at home.
- Using a ruler or measuring tape measure the inside diameter of a ring in millimeters.
- Using a table down below find a ring size that is true to your measurements.
"Ring sizer" app
- Download "ring sizer" app on your phone (it's free).
- Open the app and according to the instructions in the app measure your ring.
- Compare your ring size to a table we provide down below.
Paper strip method
-
Cut a thin strip of paper.
- Wrap the paper around your ring finger just below the knuckle.
- Once it’s snug you’ll want to mark where the two ends meet on the inside of your finger with a pen. Just make sure you’re not wrapping it TOO snug. You’ll want to find a comfort fit vs. a tighter fit.
- Flatten out the thin strip of paper and measure how many millimeters from the mark you just made to the end of the paper you used.
- Match that measurement with the corresponding standard ring sizes, below.

|
Ring inside diameter mm |
Ring size |
Measurement in mm |
US size |
|---|---|---|---|
| 14 mm | 14 | 44 mm | 3 |
| 14.5 mm | 14.5 | 45.2 mm | 3 1/2 |
| 15 mm | 15 | 47 mm | 4 |
| 15.5 mm | 15.5 | 47.8 mm | 4 1/2 |
| 16 mm | 16 | 50.3 mm | 5 |
| 16.5 mm | 16.5 | 51.7 mm | 6 |
| 17 mm | 17 | 53.5 mm | 6 1/2 |
| 17.5 mm | 17.5 | 55.1 mm | 7 |
| 18 mm | 18 | 57.2 mm | 7 1/2 |
| 18.5 mm | 18.5 | 58.4 mm | 8 |
| 19 mm | 19 | 59.7 mm | 9 |
| 19.5 mm | 19.5 | 61 mm | 9 1/2 |
| 20 mm | 20 | 63 mm | 10 |
| 20.5 mm | 20.5 | 64.7 mm | 11 |
| 21 mm | 21 | 66 mm | 11 1/2 |
| 21.5 mm | 21.5 | 67.5 mm | 12 |
| 22 mm | 22 | 69 mm | 12 1/2 |
| 22.5 mm | 22.5 | 71 mm | 13 |
