Use a ring sizer or sizing strip for the most accurate result
Measure the finger at the end of the day when it is warm
Measure the exact finger and hand the ring will be worn on
Ensure the ring can slide over the knuckle comfortably
If between sizes, choose the larger size
For wide bands, size up slightly
For thin bands, use your standard size
Avoid measuring when fingers are cold or swollen
Compare the measurement to a standard ring size chart
Confirm the size with a jeweler if possible