Find your perfect fit

Find your perfect fit

Measure an
existing ring

Measure an
existing ring

1. Select an existing ring that fits the desired finger.

2. Measure the internal diameter of the ring (in mm).

3. Use the below chart to determine your ring size.

Download Guide
Ring Measurement

What’s your size?

Already know your size according to different country's standard?

Use the helpful conversion chart below to see which US & Canada size you'd wear.

Internal Diameter (MM) USA &
Adjustable Rings Europe UK/AU
15.7 5 S 50 J
16.5 6 S 52 L
17.3 7 M 55 N
18.1 8 M 57 P
18.9 9 L 60 R
19.8 10 L 62 T
20.6 11 - 64 V
21.5 12 - 67 X
22.3 13 - 69 Z

Our Moon Magic sizes match standard US/CAN sizes.

Tips & Tricks

Still not sure how to measure your ring?

No worries, we got you covered!

Check out our video.

Watch Video
Tips & Tricks
Still Unsure?

Still Unsure?

If you are in between sizes or would love a more versatile piece, why not explore our adjustable rings. Shop the Boundless collection.