Ring Size Chart
Circumference
(in / mm)
Diameter
(in / mm)
US Size UK Size
2'' / 51 mm 5⁄8'' / 16.1 mm 5 J ½ or L
1⁄8'' / 53 mm 11⁄16'' / 17 mm 6 M or N
2 3⁄16'' / 56 mm 11⁄16'' / 17.75 mm 7 O or P
2 1⁄4'' / 58 mm 3⁄4'' / 18.5 mm 8 Q or Q ½