Ring Size Guide - Siren Jewelry

A ring should feel like a second skin - there when you look at it, forgotten when you don't. Here's how to find yours in a few minutes.

EU size	Inside diameter	Circumference	US size
43	13.7 mm	43 mm	2.75
44	14.0 mm	44 mm	3
45	14.3 mm	45 mm	3.25
46	14.6 mm	46 mm	3.75
47	15.0 mm	47 mm	4
48	15.3 mm	48 mm	4.5
49	15.6 mm	49 mm	5
50	15.9 mm	50 mm	5.25
51	16.2 mm	51 mm	5.75
52	16.5 mm	52 mm	6
53	16.9 mm	53 mm	6.5
54	17.2 mm	54 mm	7
55	17.5 mm	55 mm	7.25
56	17.8 mm	56 mm	7.5
57	18.1 mm	57 mm	8
58	18.5 mm	58 mm	8.5
59	18.8 mm	59 mm	8.75
60	19.1 mm	60 mm	9
61	19.4 mm	61 mm	9.5
62	19.7 mm	62 mm	10
63	20.1 mm	63 mm	10.25
64	20.4 mm	64 mm	10.75

My rings use EU sizes (the inner circumference in millimeters). The table shows how they convert to inner diameter and US sizes.

Option 1: Use a ring that already fits

Choose a ring that fits the finger you want to wear the new one on.
Measure its inside diameter in millimeters, edge to edge.
Find the closest match in the table.

Option 2: Measure your finger

Cut a thin strip of paper or take a piece of string.
Wrap it around the base of your finger - snug, but not tight.
Mark the point where it overlaps.
Lay it flat and measure the length in millimeters. That's your EU size.

A few tips

Measure at the end of the day, when your fingers are at their fullest.
Cold hands are smaller hands - let them warm up first.
Make sure the ring will slide over your knuckle.
Between two sizes? Choose the larger one, especially for wider bands.

Still not sure?

Send me a message with your measurement and the ring you're looking at, and I'll help you choose. Since I adjust each ring to the size you order, it's worth getting it right.