Most accurate with a plain, flat band, such as a wedding ring. A curved profile or a centre stone can read a size out.
Step 1 of 2: calibrate your screen. Screens vary, so we need to set the scale first. Use a bank card or a ruler.
Hold any bank card, licence or Medicare card flat against the screen and drag the slider until the outline matches its size exactly.
Hold any bank card, licence or Medicare card flat against the screen, turned upright, and drag the slider until the outline matches it exactly.
Hold a ruler flat against the screen, line it up with the left edge, and drag the slider until the centimetre marks match.
Step 2 of 2: match your ring. Place the ring flat on the screen and drag the slider until the circle sits just inside the inner edge of the ring.
Standard size.
Our standard range is whole sizes only (US 4 to 12). Half sizes are available on custom rings in solid gold and platinum. Sizes 11 and 12 are available on men's rings. If you fall between two sizes, or the band is wide, we recommend sizing up. This tool is a guide only. For a precise fit, use our free ring sizer.
