Ring Size Guide

Get measured

For the most accurate measurement, visit a local jeweller. Most will size your finger free of charge. Or get in touch and we'll post you a free ring sizer. UK only, one per customer.

Request a sizer

Measure at home

Using a ring that already fits the right finger:

  1. Place the ring flat on a ruler.
  2. Measure across the inside, edge to edge.
  3. Match the diameter to the chart below.

Use a ring worn on the same finger you're sizing for.

Conversion chart

All measurements in millimetres.

UKUSEUCirc.Dia. A½3837.812.0 A½13838.512.2 B13939.112.4 B½1½4039.712.6 C1½4040.412.8 C½24141.013.1 D24241.713.3 D½2½4242.313.5 E2½4342.913.7 E½34343.613.9 F34444.214.1 F½3½4544.814.3 G3½4545.514.5 G½44646.114.7 H44746.814.9 H½4½4747.415.1 I4½4848.015.3 I½54848.715.5 J54949.315.7 J½5½5050.015.9 K5½5050.616.1 K½65151.216.3 L65251.916.5 L½6½5252.516.7 M6½5353.116.9 M½75453.817.1
UKUSEUCirc.Dia. N75454.417.3 N½7½5555.117.5 O7½5555.717.7 O½85656.317.9 P85757.018.1 P½8½5857.618.3 Q8½5858.318.5 Q½95958.918.7 R95959.518.9 R½9½6060.219.2 S9½6060.819.4 S½106161.419.6 T106262.119.8 T½10½6262.720.0 U10½6363.420.2 U½116464.020.4 V116564.620.6 V½11½6565.320.8 W11½6665.921.0 W½126666.621.2 X126767.221.4 X½12½6867.821.6 Y12½6868.521.8 Y½136969.122.0 Z136969.722.2 Z½13½7070.422.4

Notes

  • Don't measure when your hands are hot or cold. Fingers change size at the extremes.
  • If your knuckle is larger than the base of your finger, size for the knuckle.
  • If unsure, get in touch. We'd rather take five minutes to help than have you guess. hello@alicephilpott.studio