Size guide

Find your ring size at home

The right size is the first step to a lifetime of comfort. Choose the method that suits you and find your size in a few minutes.

Ring sizes on our site are Turkish sizes: the inner circumference in millimetres minus 40. Your German size is the inner circumference itself. The chart below converts between Turkish, German, US and UK sizes. Go to the chart

1. method

With a string or paper strip

1
Take a thin string that doesn't stretch, or a strip of paper about 5 mm wide.
2
Wrap it around the finger you will wear the ring on, loose enough to slide over the knuckle. Not too tight, not too loose.
3
Mark the point where the ends meet with a pen.
4
Lay it flat and measure the length from the end to the mark with a ruler, in millimetres.
5
Subtract 40 from that number: the result is your Turkish ring size. For example, 53 mm is size 13. The calculator below does this for you.

2. method

With a ring you already own

1
Choose a ring that fits comfortably on the finger you will wear the wedding ring on.
2
Lay the ring flat and measure straight across the middle, from inner edge to inner edge. Do not include the metal.
3
Enter the inner diameter in the calculator, or find your size in the inner diameter column of the chart.

3. method

With a printable template

1
Open the template and print it at 100% scale. Make sure “Fit to page” is switched off.
2
Check the 50 mm control line on the paper with a real ruler.
3
Place your ring on the circles. The circle that matches its inner edge exactly shows your size.

Open the template

Size calculator

Enter your finger circumference or your ring's inner diameter in millimetres to see your size instantly.

Circumference (mm)

Ring size conversion chart

German size = inner circumference in mm. US and UK sizes are rounded to the nearest half size and are approximate.

Turkish size	Inner circumference	Inner diameter	German size	US (approx.)	UK (approx.)
6	46 mm	14.6 mm	46	3.5	G½
7	47 mm	15.0 mm	47	4	H½
8	48 mm	15.3 mm	48	4.5	I
9	49 mm	15.6 mm	49	5	J
10	50 mm	15.9 mm	50	5.5	K
11	51 mm	16.2 mm	51	5.5	K½
12	52 mm	16.6 mm	52	6	L½
13	53 mm	16.9 mm	53	6.5	M
14	54 mm	17.2 mm	54	7	N
15	55 mm	17.5 mm	55	7	O
16	56 mm	17.8 mm	56	7.5	O½
17	57 mm	18.1 mm	57	8	P½
18	58 mm	18.5 mm	58	8.5	Q
19	59 mm	18.8 mm	59	9	R
20	60 mm	19.1 mm	60	9	S
21	61 mm	19.4 mm	61	9.5	S½
22	62 mm	19.7 mm	62	10	T½
23	63 mm	20.1 mm	63	10.5	U
24	64 mm	20.4 mm	64	11	V
25	65 mm	20.7 mm	65	11	W
26	66 mm	21.0 mm	66	11.5	W½
27	67 mm	21.3 mm	67	12	X½
28	68 mm	21.6 mm	68	12.5	Y
29	69 mm	22.0 mm	69	12.5	Z
30	70 mm	22.3 mm	70	13	Z+1
31	71 mm	22.6 mm	71	13.5	Z+2
32	72 mm	22.9 mm	72	14	Z+3

Tips for an accurate size

Measure in the evening; fingers swell a little during the day.
Fingers get thinner in the cold; measure in a warm room.
Measure two or three times and use the result you get most often.
If your knuckle is wide, measure so the ring can pass over it.
For wide rings (6 mm and above), choose half a size larger.
If you are buying a pair, measure both fingers separately.
Don't measure a ring by holding it against a phone or computer screen; screen sizes are not true to scale.