Every ring size

Pick a US size or a millimetre measurement for its full conversion.

By US size

• Size 3
• Size 3.5
• Size 4
• Size 4.5
• Size 5
• Size 5.5
• Size 6
• Size 6.5
• Size 7
• Size 7.5
• Size 8
• Size 8.5
• Size 9
• Size 9.5
• Size 10
• Size 10.5
• Size 11
• Size 11.5
• Size 12
• Size 12.5
• Size 13

By millimetre (diameter)

• 14 mm
• 14.5 mm
• 15 mm
• 15.5 mm
• 16 mm
• 16.5 mm
• 17 mm
• 17.5 mm
• 18 mm
• 18.5 mm
• 19 mm
• 19.5 mm
• 20 mm
• 20.5 mm
• 21 mm
• 21.5 mm
• 22 mm
• 22.5 mm
• 23 mm

See the full chart or convert with the tool.