Find your ring size

Measure a ring you already wear, or convert a millimeter measurement. Every size below is a US size.

17.35 mm

US size7

54.5 mm inside circumference

14.0 mm · US 322.3 mm · US 13

Laying a ring on the screen? Calibrate first — sizes will be off otherwise.

How to measure

1Use a ring that already fitsPick one worn on the same finger, and preferably a band of similar width.

2Measure across the insideLay it flat and measure the inside edge to inside edge, straight through the center, in millimeters.

3Match it on the dialSlide to your measurement. Between two sizes, take the larger one.

Printable ring sizerPrint at 100% scale — no fit-to-page — cut it out, and wrap it around your finger.PDF