Unless purchasing in a jewelry store, professional ring sizing tools are often unavailable. However, you can size your fingers at home using simple methods.

General Ring Size Guide A well-fitting ring sits comfortably at the base of your finger, sliding easily but not so loose as to risk falling off, and not so tight that it affects circulation.

Ring Size Chart Ring sizes are measured in millimeters. Use a conversion chart to find your ring size after measuring your finger.

Measuring Ring Size with String or Floss

1. Use string/floss, a pen, and a millimeter ruler.
2. Wrap the string around the finger base and mark where it overlaps. Do the same for the knuckle.
3. Measure the string length in millimeters and average the two measurements.
4. Refer to the conversion chart for your ring size.

Important Factors 

Every finger is different

• Finger Variation: Each finger has a different size, and the size of your dominant hand may differ from your non-dominant hand. Measure the specific finger you intend to wear the ring on.
• Temperature Influence: Finger size can vary with temperature. Fingers swell in heat and shrink in cold. Measure your finger in warmer conditions to ensure the ring fits year-round.
• Multiple Measurements: Finger size can fluctuate due to various factors. Measure your finger several times over different days to ensure accuracy.
• Knuckle Size: Measure both the base and the knuckle to ensure the ring fits over the knuckle while resting comfortably at the base.

When in Doubt, Size Up If you are between sizes, opt for the larger size. A slightly loose ring is more comfortable and can be resized more easily to be smaller than to be enlarged.