How to check your ring size.

  1. Cut a piece of paper 1cm wide
  2. Wrap it around you ring finger. Place a marker at the pointer as shown in (2).
  3. The marker
  4. Flip the paper and place double sided tape or glue on the tip of the paper as shown in (4).
  5. Glue the paper together to form a ring.
  6. Cut the unwanted piece that is still left .
  7. Carefully insert the paper to test the size and if it can go through your knuckle
  8. Cut it, so you can get the circumference of your ring finger (3) in mm.
  9. Use the circumference and check the chart below to get your ring size.
Note: This method gives you a rough estimate. It is best to go get your ring size checked at your local jewelers and insist you get the circumference or the diameter as the different scales that many jewelrs use can have some descrepencies.

International Ring Size Conversion Chart

Inside Diameter Inside CircumferenceSizes
MMInchesMMInchesBritish & Australian US & CanadaFrench & RussianGermanJapaneseSwiss
9.910.39031.131.220000
10.720.44233.681.3900
11.530.45436.221.430
11.950.47437.541.49A1/2
12.180.48238.261.51A 1/23/4
12.370.48738.861.53B11
12.600.49639.581.56B 1/21 1/4
12.780.50340.151.58C1 1/2
13.000.51240.841.61C 1/21 3/4
13.210.52041.501.63D241 1/213 1/221 1/2
13.410.52842.131.66D 1/22 1/4
13.610.53642.761.68E2 1/242 3/413 3/432 3/4
13.830.54443.451.71E 1/22 3/4
14.050.55344.141.74F3441444
14.150.55744.451.75F 1/23 1/8
14.250.56144.771.76F 3/43 1/4
14.360.56545.111.77G3 3/845 1/455 1/4
14.450.56945.401.79G 1/43 1/214 1/2
14.560.57345.741.80G 1/23 5/86
14.650.57746.021.81H3 3/446 1/26 1/2
14.860.58546.681.84H 1/24157
15.040.59247.251.86I4 1/447 3/47 3/4
15.270.60147.971.89I 1/24 1/215 1/48
15.400.60648.381.90J4 5/84915 1/29
15.530.61148.791.92J 1/44 3/4
15.700.61849.321.94J 1/2515 3/49
15.800.62249.641.95K5 1/85010
15.900.62649.951.97K 1/45 1/4
16.000.63050.271.98K 1/25 3/810
16.100.63450.581.99L5 1/251 3/41611 3/4
16.300.64251.212.02L 1/45 3/4
16.410.64651.552.03L 1/25 7/8
16.510.65051.872.04M652 3/416 1/21212 3/4
16.710.65852.502.07M 1/26 1/4
16.920.66653.162.09N6 1/254171314
17.130.67453.822.12N 1/26 3/4
17.350.68354.512.15O755 1/417 1/41415 1/4
17.450.68754.822.16O 1/27 1/4
17.750.69955.762.20P7 1/256 1/217 3/41516 1/2
17.970.70756.452.22P 1/27 3/4
18.190.71657.152.25Q857 3/4181617 3/4
18.350.72257.652.27Q 1/28 1/4
18.530.72958.212.29Q 3/48 1/218 1/217
18.610.73358.472.30R8 5/85919
18.690.73658.722.31R 1/48 3/4
18.800.74059.062.32R 1/28 7/8
18.890.74859.342.35R 3/491918
19.100.75260.002.36S9 1/860 1/420 1/4
19.220.75760.382.38S 1/49 1/4
19.310.76060.662.39S 1/29 3/8
19.410.76460.982.40S 3/49 1/219 1/219
19.510.76861.292.41T9 5/861 1/221 1/2
19.620.77261.642.43T 1/49 3/4
19.840.78162.332.45T 1/2102020
20.020.78862.892.48U10 1/462 3/42122 3/4
20.200.79763.462.50U 1/210 1/220 1/422
20.320.80063.842.51V10 5/86323 3/4
20.440.80564.212.53V 1/410 3/4
20.680.81464.972.56V 1/21120 3/423
20.760.81765.222.57W11 1/86525
20.850.82165.502.58W 1/411 1/4
20.940.82465.782.59W 1/211 3/8
21.080.83066.222.61W 3/411 1/22124
21.180.83466.542.62X11 5/866 1/426 1/4
21.240.83666.732.63X 1/411 3/4
21.300.83966.922.64X 1/211 7/8
21.490.84667.512.66Y1267 1/221 1/42527 1/2
21.690.85468.142.68Y 1/212 1/4
21.890.86268.772.71Z12 1/268 3/421 3/42628 3/4
22.100.87069.432.73Z +1/212 3/4
22.330.87970.152.76Z+1132227
22.600.89071.002.80Z+1.513.5
22.690.89371.282.81Z+2
22.920.90272.002.83Z+2.5
23.060.90872.452.85Z+3
23.240.91573.012.87Z+3.5
23.470.92473.732.90Z+4
23.550.92773.982.91Z+4.5
23.870.94074.992.95Z+5
24.270.95676.253.00Z+6