How to Measure Your Ring Size

Use the following methods to measure your ring size accurately:

Method	Instructions	What You’ll Need	Tips for Accuracy
String Method	1. Wrap a string around the base of your finger. 2. Mark the point where the string overlaps. 3. Measure the length with a ruler.	Thin string, ruler	- Use a non-stretchable string. - Measure at the end of the day for best results. - Repeat the process twice for accuracy.
Paper Strip Method	1. Cut a thin strip of paper. 2. Wrap it around your finger's base and mark where it overlaps. 3. Measure the length in millimeters (mm).	Paper strip, ruler, pen/pencil	- Ensure the paper lies flat against your skin. - Do not pull too tight. - Double-check measurements.
Use a Ring You Own	1. Choose a ring that fits the desired finger. 2. Measure the internal diameter with a ruler or caliper.	A well-fitting ring, ruler	- Ensure the ring is round, not warped. - Measure in multiple spots for consistency.
Ring Sizer Tool	1. Purchase a ring sizer or visit a jeweler. 2. Slide the sizer onto your finger or place the rings over a sizing chart.	Ring sizer or sizing chart	- Opt for a professional tool for highest accuracy. - Follow instructions provided with the tool. - Ask a jeweler for a second opinion if unsure.

European Ring Size Conversion Table

Inside Diameter (mm)	Inside Circumference (mm)	EU Size	UK Size	US Size
15.3	48.0	48	I	4.5
15.9	50.0	50	K	5.5
16.5	52.0	52	L	6.0
17.2	54.0	54	N	7.0
17.8	56.0	56	O	7.5
18.4	58.0	58	Q	8.5
19.0	60.0	60	R	9.0

Conclusion

Your ring size can vary slightly depending on temperature, time of day, or physical activity. Ensure your measurement accounts for your knuckle size; the ring should slide over it comfortably. Consult a jeweler if unsure about your size.