Get your ring size

Determine ring size

Option 1: Rocks & Co. ring template or ring sizer

To determine your personal size, we have prepared a ring template for you. You can find out the inner diameter by placing a suitable ring onto the template, or, you can use the ring sizer to cut this out.

Get your ring-sizer here!
ringsizes_determiner_title_text Ring-sizer Preview
 

Option 2: Determine the inside diameter

Place a ring that fits you well on a ruler and read the inside diameter in millimeters on the ruler. Multiply this value by 3.14. The value you get is your inner circumference.

Inner diameter (in mm) x 3.14 = inner circumference (in mm)

 

Option 3: Determine the inner circumference

A piece of string is wrapped around the finger you want to wear the ring on. Wrap the string around the finger so that it is not too tight and fits over the knuckle. Use a pen to mark the spot on the string where both ends meet. The length of the cord measured on a ruler is your inner circumference.

You can easily enter this in the table at the top of the page and we will calculate the ring size for you!

 

Option 4: Free Welcome Package

In addition to the book "The World of Gemstones", our welcome package includes a practical ring sizer made of plastic. We will be happy to send you this free of charge and without obligation. Register now for free .

 

International Ring Size Calculator

Do you already know your inner diameter or inner circumference? By making an entry in the corresponding field, you will receive all information about your ring dimensions at a glance. You can find help with determining the inner diameter and inner circumference here.

Learn here how to measure yourself.
Jewel ring size Jewel ring size Jewel ring size Jewel ring size Jewel ring size Jewel ring size Inner Diameter [mm] Inner Circumference [mm] French Scale English Scale US Scale
13 13 1 1 40 C ½ 12,5 39,1 - B 1
The slider helps you adjust the ring size information all at once. Inner diameter
12,5
Discover matching rings

International ring sizes

Jewel ring size Jewel ring size Jewel ring size Jewel ring size Jewel ring size Jewel ring size Inner Diameter [mm] Inner Circumference [mm] French Scale English Scale US Scale
1 13 1 40 C 13 12,5 39,1 - B 1
1 13 1 40 C 13 12,7 40 0 B 1⁄2 1 1⁄4
1 13 1 40 C 13 13,1 41 1 C 1 1⁄2
1 13 1 40 C 13 13,4 42 2 D 2
4 14 4 44 F 14 13,7 43 3 E 2 1⁄2
4 14 4 44 F 14 14 44 4 F 3
4 14 4 44 F 14 14,3 45 5 F 1⁄2 3 1⁄4
7 15 7 47 H 15 14,6 46 6 G 3 1⁄2
7 15 7 47 H 15 15 47 7 H 4
7 15 7 47 H 15 15,3 48 8 I 4 1⁄2
11 16 11 50 K 16 15,6 49 9 J 4 3⁄4
11 16 11 50 K 16 15,7 49,3 9,3 J 1⁄2 5
11 16 11 50 K 16 15,9 50 10 K 5 1⁄4
11 16 11 50 K 16 16,2 51 11 K 1⁄2 5 1⁄2
14 17 14 54 N 17 16,3 51,2 11,2 L 5 3⁄4
14 17 14 54 N 17 16,5 52 12 L 1⁄2 6
14 17 14 54 N 17 16,9 53 13 M 6 1⁄4
14 17 14 54 N 17 17,2 54 14 N 6 3⁄4
17 18 17 57 P 18 17,3 54,4 14,4 N 1⁄2 7
17 18 17 57 P 18 17,5 55 15 O 7 1⁄4
17 18 17 57 P 18 17,8 56 16 O 1⁄2 7 1⁄2
17 18 17 57 P 18 18,1 57 17 P 8
20 19 20 60 R 19 18,5 58 18 Q 8 1⁄4
20 19 20 60 R 19 18,7 59 19 R 8 3⁄4
20 19 20 60 R 19 19,1 60 20 R 1⁄2 9
20 19 20 60 R 19 19,4 61 21 S 9 1⁄2
23 20 23 63 T 20 19,7 62 22 T 9 3⁄4
23 20 23 63 T 20 19,8 62,1 22,1 T 1⁄2 10
23 20 23 63 T 20 20,1 63 23 U 10 1⁄4
23 20 23 63 T 20 20,4 64 24 V 10 3⁄4
26 21 26 66 W 21 20,7 65 25 V 1⁄2 11
26 21 26 66 W 21 21 66 26 W 11 1⁄2
26 21 26 66 W 21 21,3 67 27 X 11 3⁄4
29 22 29 69 Z 22 21,4 67,2 27,2 X 1⁄2 12
29 22 29 69 Z 22 21,6 68 28 Y 12 1⁄4
29 22 29 69 Z 22 22 69 29 Z 12 3⁄4
29 22 29 69 Z 22 22,3 70 30 Z 1⁄2 13
32 23 32 72 Z+3 23 22,6 71 31 Z1 13 1⁄4
32 23 32 72 Z+3 23 22,9 72 32 Z2 13 3⁄4
32 23 32 72 Z+3 23 23,2 73 33 Z3 14
 
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