How to measure your ring size at home

The short answer: wrap a thin strip of paper around the base of your finger, mark where the ends overlap, then measure that length in millimetres with a ruler. That measurement is your European ring size. A 54 mm circumference is a European size 54.

Domingo Amberes rings are made in European sizes 50, 52, 54 and 56. This guide explains how to find your size at home with a ruler and a strip of paper, and how to convert it if you normally think in UK or US sizes.

Method 1 — measure your finger

You need a strip of paper about 5 mm wide and 10 cm long, a pen, and a ruler with millimetres.

• Cut the strip and wrap it around the base of the finger you will wear the ring on. Snug, not tight — it should sit the way a ring sits.
• Mark the point where the strip overlaps itself.
• Unwrap it and measure from the end of the strip to your mark, in millimetres.
• That number is your European ring size. 52 mm is a size 52.

Check that the strip can pass over your knuckle before you settle on a size. If the knuckle is noticeably wider than the base of the finger, measure the knuckle too and choose a size between the two.

Method 2 — measure a ring you already own

If you have a ring that fits the right finger, this is the more reliable method.

• Lay the ring flat and measure the inner diameter in millimetres, edge to edge, across the widest point.
• Multiply that number by 3.14.
• The result is your European size. An inner diameter of 17.2 mm gives 54.

Measure a ring with a similar band width to the one you are buying. A wide band sits differently from a thin one.

Size conversion

European (circumference)	Inner diameter	UK (approx.)	US (approx.)
50	15.9 mm	K½	5¼
52	16.6 mm	M	6
54	17.2 mm	N	6¾
56	17.8 mm	P	7½

UK and US equivalents are approximate. European sizing is a direct millimetre measurement, which is why we use it.

When to measure

Fingers change size through the day and with the weather. A few things to keep in mind:

• Measure at the end of the day, when your hands are at their largest.
• Do not measure when your hands are cold — fingers shrink, and you will end up with a ring that is too tight in summer.
• Your dominant hand is usually slightly larger than the other.
• Measure twice, on different days, and take the larger result.

If you are between sizes

Go up. A ring that is slightly loose can be worn; a ring that is too tight cannot. This matters more for our Trilogy setting, where the stones sit high and wide and the ring turns on the finger if it is too small.

If the size is wrong

Belgian orders get one free exchange. Write to service@domingo-amberes.com with your order number and the size you would like instead. Full details are on our shipping and returns page.

For the printable version and a diagram, see the ring size guide. To see the rings themselves, browse Chapter I.