Ring Sizer

FIND YOUR PERFECT FIT

Measure your finger

Wrap a strip of paper, or string, around your finger where you'd like your ring to be.
Make sure that the paper is pulled snug to your finger, the tighter the better, to find your best fit.
Mark the spot where the paper connects and measure the distance with a ruler (mm).
Use the below chart to determine your ring size.

Measure an existing ring

Select an existing ring that fits the desired finger.
Measure the internal diameter of the ring (in mm).
Use the below chart to determine your ring size.

Ring Size (No.) Circumference (mm) Internal Diameter (mm)

2# 43 13.65

4# 44 14.10

6# 46 14.65

7# 47 14.90

8# 48 15.25

9# 49 15.55

10# 50 15.85

11# 51 16.45

12# 52 16.50

13# 53 16.80

14# 54 17.20

15# 55 17.50

16# 56 17.75

17# 57 18.15

18# 58 18.40

19# 59 18.75

20# 60 19.05

21# 61 19.30

22# 62 19.70

23# 63 20.00

24# 64 20.30

25# 65 20.65

Ring Size (No.)

2# 4# 6# 7# 8# 9# 10# 11# 12# 13# 14# 15# 16# 17# 18# 19# 20# 21# 22# 23# 24# 25#

Circumference (mm)

43 44 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65

Internal Diameter (mm)

13.65 14.10 14.65 14.90 15.25 15.55 15.85 16.45 16.50 16.80 17.20 17.50 17.75 18.15 18.40 18.75 19.05 19.30 19.70 20.00 20.30 20.65