Ring Sizing Guide


Finding your perfect ring size from home is easy. Follow the steps below, then use our size chart to find your fit. And remember — all LOKYRA rings are available in made-to-order sizing, so we can always create your ring in exactly the right size.

Method 1: The String or Paper Method

This is the most accurate at-home method.

  1. Cut a thin strip of paper or use a piece of string approximately 10 cm long.
  2. Wrap it snugly around the base of the finger you'd like to wear the ring on. Make sure it's comfortable — not too tight, not too loose.
  3. Mark or pinch where the paper/string overlaps.
  4. Lay it flat and measure the length in millimetres using a ruler.
  5. This measurement is your finger circumference. Match it to the chart below to find your size.

Tip: Fingers can swell throughout the day. For the most accurate fit, measure in the evening or after light activity when fingers are at their largest.

Method 2: Measure an Existing Ring

If you already own a ring that fits perfectly on the same finger:

  1. Place the ring on a ruler and measure the inner diameter (the distance across the inside of the ring) in millimetres.
  2. Match the diameter to the chart below.

Ring Size Conversion Chart

LOKYRA rings are sized using Australian / UK letter sizes paired with US number sizes.

AUS  / UK Size US Size EU Size Inside Diameter (mm) Circumference (mm)
H 4 47 14.9 46.8
I 4.5 48 15.3 48.0
J 5 49 15.7 49.3
K 5.5 50–51 16.1 50.6
L 6 52 16.5 51.8
M 6.5 53 16.9 53.1
N 7 54–55 17.3 54.4
O 7.5 56 17.7 55.7
P 8 57 18.2 57.2
Q 8.5 58–59 18.6 58.4
R 9 60 19.0 59.7
S 9.5 61 19.4 61.0
T 10 62–63 19.8 62.2

Printable Ring Sizer

For added confidence, you can download and print a ring sizer from a trusted third-party resource:

  • Search "printable ring sizer PDF" — many jewellers and sizing tools offer these for free. Make sure to print at 100% scale (do not scale to fit page) for an accurate result.