
String or paper method
- Cut a strip of paper or string about 10 cm long.
- Wrap it around the finger base.
- Mark the overlap and measure in mm.
Existing ring method
- Choose a ring that fits the intended finger.
- Measure its inside diameter in mm.
- Match it on the ring size chart.
Printable sizer method
- Print at 100% scale with no fit-to-page.
- Cut and loop the sizer.
- Read the size where it fits the knuckle.
Tips for accuracy
- Measure at the end of the day.
- Avoid cold hands.
- Repeat three times.
- Go up slightly for wide bands.
Frequently asked questions
What size is 54.4 mm?
US size 7, UK N, EU 54, Japan 13.
Should I measure the knuckle?
Yes, the ring must pass the knuckle.
Can I use a ruler?
Yes, with string for circumference.