Every Ally ring is made to order, just for you. So let's make sure she fits perfectly. Finding your size takes two minutes: all you need is a ring you already own, or a strip of paper and a ruler.

Ring size chart

Our ring sizes are US sizes. Not sure which system you know? The EU size is simply the circumference of your finger in millimetres.

US size (Ally)	EU size	Inside diameter	Circumference
4.5	48	15.3 mm	48.0 mm
5	49	15.7 mm	49.3 mm
5.5	51	16.1 mm	50.6 mm
6	52	16.5 mm	51.9 mm
6.5	53	16.9 mm	53.1 mm
7	54	17.3 mm	54.4 mm
7.5	56	17.7 mm	55.7 mm
8	57	18.1 mm	57.0 mm
8.5	58	18.5 mm	58.2 mm
9	60	18.9 mm	59.5 mm
9.5	61	19.4 mm	60.8 mm

Need a size that's not on the list? Most of our rings can be made in a custom size: just add it in the comments at checkout, or message us.

Option 1: measure a ring you already own

The easiest and most accurate way.

1. Take a ring that fits the finger you want to wear your Ally ring on.
2. Lay it flat on a ruler and measure the inside diameter, from inner edge to inner edge, in millimetres.
3. Find the closest diameter in the chart. That's your size.

Option 2: measure your finger with paper

1. Cut a thin strip of paper (or use a piece of string that doesn't stretch).
2. Wrap it around the base of your finger: snug, but not tight.
3. Mark the point where the ends meet with a pen.
4. Lay it flat and measure the length in millimetres. That's your circumference.
5. Find the closest circumference in the chart. That's your size.

Still not sure?

We're happy to help you choose. Send us a message with your measurement and the ring you love, and we'll tell you which size to pick.

Your story, set in stone. Let's make sure it fits.