Find your ring size using one of these easy methods:
Measure an existing ring

If you already own a Sanaz Doost ring, this is perfect. Once you complete this exercise, future ordering will be easy. Alternatively, you can measure one of your other favorites.

  1. If you measure the internal diameter of your ring (in mm) it should match with the corresponding size in the ring chart below. Be sure to use millimeters.
Measure your finger
Measure a ring with a string or a thin strip paper.
This can be easily done and can help find an accurate fit.

  1. Cut a long string or piece of paper that’s about 6-inches long.
  2. Wrap it snugly around the base of your finger, the tighter the better but make sure to not let the string stretch while you’re wrapping it around your finger.
  3. Mark the spot where the string or paper meets and measure the distance with a ruler (in mm).
  4. Match your finger measurement (in mm) with the closest circumference below.
measuring finger for ring size

measuring finger for ring size

Measuring Tape
If you happen to own a measuring tape at home.
then this is will get the job done most accurately.

  1. Find a flexible, measuring tape with millimeters on its ruler.
  2. Wrap the tape snugly around the base of your finger, not too tight and not too loose. Aim for a snug but comfortable fit. Make sure to not let the measuring tape go and make sure you start from the 0 mark on the tape.
  3. Remember the number that meets up with your starting point at 0. Note how many millimeters it took to wrap the measuring tape around your finger.
  4. Match your finger measurement (in mm) with the corresponding ring size in the ring chart shown in method #02. If your tape is only showing in centimeter, use an online CM to MM converter to figure out your finger size in the closest millimeter.

  • Make sure to measure your fingers are at room temperature to get a more accurate reading as weather can and directly affect the size of your fingers.
  • Avoid measuring your fingers after you had some salty snacks and a couple of glasses of wine because alcohol and salt can make your fingers swell!
  • If you’re between sizes, we recommend ordering up. It’s always easier to size a ring smaller, than larger.
If you already know your size, please convert to the Canada/USA size below:
CIRCUMFERENCE (MM) DIAMETER (MM) USA & CANADA EUROPE UK ASIA
CIRCUMFERENCE (MM) DIAMETER (MM) USA & CANADA EUROPE UK ASIA
42 13.3 2.0 42 E 4
43 13.7 2.50 43 E.5 5
44 14.1 3.0 44 F 5.5
45 14.3 3.25 45 G 6
14.5 3.50
46 14.7 3.75 46 H 7
47 14.9 4.0 47 H.5 7.5
15.1 4.25 8
48 15.3 4.50 48 I.5 8.5
49 15.5 4.75 49 J.5 9
15.7 5.0
50 15.9 5.25 50 K 10
16.1 5.50
51 16.3 5.75 51 L 11
52 16.5 6.0 52 L.5 12
53 16.7 6.25 53 M.5 13
16.9 6.50
54 17.1 6.75 54 N.5 14
17.3 7.0
55 17.5 7.25 55 O 15
56 17.7 7.50 56 P 16
17.9 7.75
57 18.1 8.0 57 P.5 17
58 18.3 8.25 58 Q.5 18
18.5 8.50
59 18.8 8.75 59 R 19
60 19.0 9.0 60 S 20
19.2 9.25
61 19.4 9.50 61 S.5 21
19.6 9.75
62 19.8 10.0 62 T.5 22
63 20.0 10.25 63 U.5 23
20.2 10.5
64 20.4 10.75 64 V 24
65 20.6 11.0 65 W 25
20.8 11.25
66 21.0 11.5 66 W.5 26
67 21.2 11.75 67 X.5 27
21.4 12.0
68 21.6 12.25 68 Z 28
69 21.8 12.5 69 Z.5 29
22.0 12.75
70 22.2 13.0 70 30