How to find your ring size at home

Whether you're buying a ring for yourself or as a gift, knowing the correct ring size is key. Here’s a simple guide to help you measure your finger at home!

Option 1: Use a Strip of Paper or String

What you’ll need:

  • A thin strip of paper (or a piece of string)
  • A ruler (millimeters preferred)
  • A pen or pencil

Steps:

  1. Wrap the paper or string around the base of your finger.
  2. Mark the point where the end meets. (the string must be tight)
  3. Unwrap and lay it flat.
  4. Measure the length (in millimeters) from the start to the mark.
  5. Find your size using the chart below.

Circumference (mm)

Ring Size (EU)

47 mm

47

48 mm

48

49 mm

49

50 mm

50

51 mm

51

52 mm

52

53 mm

53

54 mm

54

55 mm

55

56 mm

56

57 mm

57

58 mm

58

59 mm

59

60 mm

60

61 mm

61

62 mm

62

63 mm

63

64 mm

64

65 mm

65

66 mm

66

67 mm

67

 

Option 2: Measure an Existing Ring (the best)

If you already have a ring that fits the right finger, you can use it to find your size. This is the best method

What you’ll need:

  • A ruler (millimeters)
  • A ring that fits perfectly

Steps:

  1. Place the ring on a flat surface.
  2. Measure the inside diameter of the ring (not the outer edge).
  3. Use the chart below to match the diameter to a ring size.

By Ring Diameter (from Option 2)

Inside Diameter (mm)

Ring Size (EU)

Ring Size (US)

14

44

3

14.5

46

3.75

15

47

4.25

15.5

48.5

4.5

16

50

5.25

16.5

52

6

17

53

6.5

17.5

55

7.25

18

57

8

18.5

58

8.5

19

59.5

9

19.5

61

9.5

20

62.5

10.25

20.5

64

10.75

21

66

11.5

21.5

67

12

22

69

12.75


Tips for Accurate Measuring

  • Measure at the end of the day when your fingers are at their largest.
  • Make sure your hands are warm (cold fingers shrink slightly).
  • Don’t pull the paper or string too tight—it should fit snugly, not tightly.
  • Measure the exact finger where the ring will go, as sizes can differ between fingers and hands.

 

Ring Size Conversion Chart (EU → US)

EU Size US Size
49 5
50 5.25
51 5.5
52 6
53 6.25
54 6.5
55 7
56 7.25
57 7.5
58 8
59 8.25
60 8.5
61 9
62 9.25
63 9.5
64 10
65 10.25
66 10.5
67 11
68 11.25
69 11.5
70 12