Wrist Size Wrist Size in cm Recommended Bracelet Size Fit
5.5 in 14 cm 6.0 in / 15 cm Petite
6.0 in 15 cm 6.5 in / 16.5 cm Small
6.5 in 16.5 cm 7.0 in / 18 cm Standard
7.0 in 18 cm 7.5 in / 19 cm Medium
7.5 in 19 cm 8.0 in / 20 cm Large
8.0 in 20 cm 8.5 in / 21.5 cm Extra large

US Ring Size Inside Diameter Inside Circumference
4 14.9 mm 46.8 mm
5 15.7 mm 49.3 mm
6 16.5 mm 51.9 mm
7 17.3 mm 54.4 mm
8 18.1 mm 57.0 mm
9 18.9 mm 59.5 mm
10 19.8 mm 62.1 mm
11 20.6 mm 64.6 mm
12 21.4 mm 67.2 mm

Necklace Length Length in cm Common Fit / Placement
14 in 35 cm Choker, sits closely around the neck
16 in 40 cm Short necklace, sits at the base of the neck
18 in 45 cm Classic length, sits around the collarbone
20 in 50 cm Slightly below the collarbone
22 in 55 cm Upper chest length
24 in 60 cm Mid-chest length
30 in 76 cm Long necklace, falls below the bust line