How To Measure Your Ring Size

There are a few different methods you can use to find out your perfect ring size. If you already own a ring in the correct size, you can physically measure it or compare it against our sizes. If not, you can measure your finger to determine your size. Discover how to measure your ring size below.

Ring Size 1


Method 1: Measure a Ring

Find a ring that fits comfortably on the finger you intend to wear your new ring on.
Measure the internal diameter of the ring, using a ruler or measuring tape. To do so, ensure you are using a ruler with millimetre (mm) measurements, then place your ring on top of the ruler and measure the inside of the circle – in other words, the part that is in contact with your finger.
Use our Ring Size Chart to convert your diameter measurement into the correct ring size.


Method 2: Measure your Finger

Cut a piece of string or paper to a length of around 10 centimetres (cm).
Wrap the paper or string around your finger at the point where the ring should sit. Pull so that the string fits comfortably around your finger - not too tight and not too loose.
Use a pen to mark the point where the end of the string or paper overlaps itself.
Lay the string or paper out against a ruler or tape measure, and measure the length (mm) from its end to the point you have marked with pen, use it to find your size using our Ring Size Chart below.
RingSizeGuide_2x


Expert Tips

1. Always double-check your measurements for accuracy.
2. Your finger size can fluctuate slightly during the day, over time, and depending on the temperature. If measuring your actual finger, do so in the afternoon when your hands are warm for best results. If you fall between two ring sizes, choose the larger size (or half size) to ensure a comfortable fit.
3. Ensure you measure the exact finger on which you intend to wear your ring (or a ring that you wear on the same finger). Your ring size will vary between your fingers as well as between your hands.

Ring Size US 2.25

Inches MM UK EU
0.578 14.7 E 44

Ring Size US 2.5

Inches MM UK EU
0.590 15.0 F 45

Ring Size US 2.75

Inches MM UK EU
0.602 15.3 G 46

Ring Size US 3

Inches MM UK EU
0.614 15.6 H 47

Ring Size US 3.25

Inches MM UK EU
0.626 15.9 I 48

Ring Size US 3.5

Inches MM UK EU
0.638 16.2 J 49

Ring Size US 3.75

Inches MM UK EU
0.650 16.5 K 50

Ring Size US 4

Inches MM UK EU
0.662 16.8 L 51

Ring Size US 4.25

Inches MM UK EU
0.674 17.1 M 52

Ring Size US 4.5

Inches MM UK EU
0.686 17.4 N 53

Ring Size US 4.75

Inches MM UK EU
0.698 17.7 O 54

Ring Size US 5

Inches MM UK EU
0.710 18.0 P 55

Ring Size US 5.25

Inches MM UK EU
0.722 18.3 Q 56

Ring Size US 5.5

Inches MM UK EU
0.734 18.6 R 57

Ring Size US 5.75

Inches MM UK EU
0.746 18.9 S 58

Ring Size US 6

Inches MM UK EU
0.758 19.2 T 59

Ring Size US 6.25

Inches MM UK EU
0.770 19.5 U 60

Ring Size US 6.5

Inches MM UK EU
0.782 19.8 V 61

Ring Size US 6.75

Inches MM UK EU
0.794 20.1 W 62

Ring Size US 7

Inches MM UK EU
0.806 20.4 X 63

Ring Size US 7.25

Inches MM UK EU
0.818 20.7 Y 64

Ring Size US 7.5

Inches MM UK EU
0.830 21.0 Z 65

Ring Size US 7.75

Inches MM UK EU
0.842 21.3 Z+1 66

Ring Size US 8

Inches MM UK EU
0.854 21.6 Z+2 67

Ring Size US 8.25

Inches MM UK EU
0.866 21.9 Z+3 68

Ring Size US 8.5

Inches MM UK EU
0.878 22.2 Z+4 69

Ring Size US 8.75

Inches MM UK EU
0.890 22.5 Z+5 70

Ring Size US 9

Inches MM UK EU
0.902 22.8 Z+6 71

Ring Size US 9.25

Inches MM UK EU
0.914 23.1 Z+7 72

Ring Size US 9.5

Inches MM UK EU
0.926 23.4 Z+8 73

Ring Size US 9.75

Inches MM UK EU
0.938 23.7 Z+9 74

Ring Size US 10

Inches MM UK EU
0.950 24.0 Z+10 75

Ring Size US 10.25

Inches MM UK EU
0.962 24.3 Z+11 76

Ring Size US 10.5

Inches MM UK EU
0.974 24.6 Z+12 77

Ring Size US 10.75

Inches MM UK EU
0.986 24.9 Z+13 78

Ring Size US 11

Inches MM UK EU
0.998 25.2 Z+14 79

Ring Size US 11.25

Inches MM UK EU
1.010 25.5 Z+15 80

Ring Size US 11.5

Inches MM UK EU
1.022 25.8 Z+16 81

Ring Size US 11.75

Inches MM UK EU
1.034 26.1 Z+17 82

Ring Size US 12

Inches MM UK EU
1.046 26.4 Z+18 83

Ring Size US 12.25

Inches MM UK EU
1.058 26.7 Z+19 84

Ring Size US 12.5

Inches MM UK EU
1.070 27.0 Z+20 85

Ring Size US 12.75

Inches MM UK EU
1.082 27.3 Z+21 86

Ring Size US 13

Inches MM UK EU
1.094 27.6 Z+22 87