Ring Size Guide

Finding the right fit shouldn't be a guessing game. Here's everything you need to order your ring with confidence.

How to measure your ring size

Option 1: The string or paper strip method

  1. Wrap a thin strip of paper or a piece of string around the base of your finger, where the ring will sit.
  2. Mark the point where the ends meet, or where the string overlaps.
  3. Measure that length in millimetres with a ruler — this is your circumference.
  4. Match it to the closest size in the chart below.

Option 2: Measure a ring you already own

  1. Pick a ring that already fits the intended finger well.
  2. Measure the inside diameter (edge to edge, straight across the middle) in millimetres.
  3. Match it to the closest size in the chart below.

A little tip: fingers are usually at their largest at the end of the day and in warm weather, so measure then for the truest fit. If you're between two sizes, we always recommend sizing up.

Size conversion chart

US Size UK Size Diameter (mm) Circumference (mm)
5 J½ 15.7 49.3
5.5 K½ 16.1 50.6
6 L½ 16.5 51.8
6.5 M½ 16.9 53.1
7 O 17.3 54.4
7.5 P 17.7 55.6
8 Q 18.1 56.9
8.5 Q½ 18.5 58.1
9 R½ 18.9 59.4
9.5 S½ 19.3 60.6

Highlighted rows are the sizes most of our rings are made in — if you fall between two of these, we recommend sizing up.

A note on adjustable rings

Some of our designs are open-backed and fully adjustable, made to gently flex to fit most fingers — no exact size needed. You'll find this noted on the product page for any adjustable style.