Inches to Ring Size Converter

• Your finger measures a US / Canada size 7, which is UK N, European 51.9, Japan 13, and Germany 16.5.
• The inside diameter is 0.650 in / 16.51 mm and the inside circumference is 2.042 in / 51.87 mm.
• Ring sizes assume normal body temperature. Cold fingers can be up to one half-size smaller, so measure mid-day when your finger is at its usual size.
• If you fall between two sizes, most jewellers recommend sizing up for wide bands (wider than 6 mm) and sizing down for very thin bands (under 2 mm), because band width affects fit.

Next stepAlways verify the size with a physical ring sizer or jeweller before ordering an expensive piece, especially for non-resizable metals like titanium or tungsten.