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Ring Size Chart for Engagement, Wedding, Costume Rings

Published: 2019-12-19 - Updated: 2021-12-05
Author: Disabled World | Contact: Disabled World (www.disabled-world.com)
Peer-Reviewed Publication: N/A
Additional References: Medical Calculators and Charts Publications

Synopsis: Sizing measurement chart for engagement, wedding and costume design finger ring sizes. To decrease the ring size a jeweler can make a small cut in the center of the ring and remove excess material until the band is the requested size. The United States and Canada use a numerical ring size scale which include half and quarter sizes. Some other countries use an alphabetical sizing scale.

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Ring Sizing Information

Engagement and wedding rings are always sized on a universal standard scale so that sizes remain constant across jewelery stores in a particular country. These ring sizes are classed in millimeters - which is the measurement based on the inner circumference of the ring.

Related Publications:

The United States and Canada use a numerical ring size scale which include half and quarter sizes. Some other countries use an alphabetical sizing scale.

To decrease the ring size a jeweler can make a small cut in the center of the ring and remove excess material until the band is the requested size.

A ring that doesn't quite fit can often be stretched to a maximum of half a size larger - if the required size exceeds this measurement extra metal will be soldered into the middle of the band.

Wedding Anniversary Names by Years Married : List of wedding anniversaries by year including names of materials, symbols and flowers associated with the time married anniversary.

Two plain gold wedding - or engagement - rings entwined together.
Two plain gold wedding - or engagement - rings entwined together.

Costume, Engagement and Wedding Ring Size Chart

Ring Size Conversions Table
US/CanadaUK/AustraliaJapanChinaDiameter (inch)Diameter (mm)Circumference (inch)Circumference (mm)
0 - - - 0.458 11.63 1.44 36.5
1/4 - - - 0.466 11.84 1.46 37.2
1/2 A - - 0.474 12.04 1.49 37.8
3/4 A 1/2 - - 0.482 12.24 1.51 38.5
1 B 1 1 0.49 12.45 1.54 39.1
1 1/4 B 1/2 - - 0.498 12.65 1.56 39.7
1 1/2 C - - 0.506 12.85 1.59 40.4
1 3/4 C 1/2 - - 0.514 13.06 1.61 41.0
2 D 2 2 0.522 13.26 1.64 41.7
2 1/4 D 1/2 - - 0.53 13.46 1.67 42.3
2 1/2 E 3 3 0.538 13.67 1.69 42.9
2 3/4 E 1/2 - - 0.546 13.87 1.72 43.6
3 F 4 4 0.554 14.07 1.74 44.2
3 1/4 F 1/2 5 5 0.562 14.27 1.77 44.8
3 1/2 G - - 0.57 14.48 1.79 45.5
3 3/4 G 1/2 6 6 0.578 14.68 1.82 46.1
4 H 7 7 0.586 14.88 1.84 46.8
4 1/4 H 1/2 - - 0.594 15.09 1.87 47.4
4 1/2 I 8 8 0.602 15.29 1.89 48.0
4 3/4 J - - 0.61 15.49 1.92 48.7
5 J 1/2 9 9 0.618 15.70 1.94 49.3
5 1/4 K - - 0.626 15.90 1.97 50.0
5 1/2 K 1/2 10 10 0.634 16.10 1.99 50.6
5 3/4 L - - 0.642 16.31 2.02 51.2
6 L 1/2 11 11 0.65 16.51 2.04 51.9
6 1/4 M 12 12 0.658 16.71 2.07 52.5
6 1/2 M 1/2 13 13 0.666 16.92 2.09 53.1
6 3/4 N - - 0.674 17.12 2.12 53.8
7 N 1/2 14 14 0.682 17.32 2.14 54.4
7 1/4 O - - 0.69 17.53 2.17 55.1
7 1/2 O 1/2 15 15 0.698 17.73 2.19 55.7
7 3/4 P - - 0.706 17.93 2.22 56.3
8 P 1/2 16 16 0.714 18.14 2.24 57.0
8 1/4 Q - - 0.722 18.34 2.27 57.6
8 1/2 Q 1/2 17 17 0.73 18.54 2.29 58.3
8 3/4 R - - 0.738 18.75 2.32 58.9
9 R 1/2 18 18 0.746 18.95 2.34 59.5
9 1/4 S - - 0.754 19.15 2.37 60.2
9 1/2 S 1/2 19 19 0.762 19.35 2.39 60.8
9 3/4 T - - 0.77 19.56 2.42 61.4
10 T 1/2 20 20 0.778 19.76 2.44 62.1
10 1/4 U 21 21 0.786 19.96 2.47 62.7
10 1/2 U 1/2 22 22 0.794 20.17 2.49 63.4
10 3/4 V - - 0.802 20.37 2.52 64.0
11 V 1/2 23 23 0.81 20.57 2.54 64.6
11 1/4 W - - 0.818 20.78 2.57 65.3
11 1/2 W 1/2 24 24 0.826 20.98 2.59 65.9
11 3/4 X - - 0.834 21.18 2.62 66.6
12 X 1/2 25 25 0.842 21.39 2.65 67.2
12 1/4 Y - - 0.85 21.59 2.67 67.8
12 1/2 Z 26 26 0.858 21.79 2.70 68.5
12 3/4 Z 1/2 - - 0.866 22.00 2.72 69.1
13 - 27 27 0.874 22.20 2.75 69.7
13 1/4 Z1 - - 0.882 22.40 2.77 70.4
13 1/2 - - - 0.89 22.61 2.80 71.0
13 3/4 Z2 - - 0.898 22.81 2.82 71.7
14 Z3 - - 0.906 23.01 2.85 72.3
14 1/4 - - - 0.914 23.22 2.87 72.9
14 1/2 Z4 - - 0.922 23.42 2.90 73.6
14 3/4 - - - 0.93 23.62 2.92 74.2
15 - - - 0.938 23.83 2.95 74.8
15 1/4 - - - 0.946 24.03 2.97 75.5
15 1/2 - - - 0.954 24.23 3.00 76.1
15 3/4 - - - 0.962 24.43 3.02 76.8
16 - - - 0.97 24.64 3.05 77.4

*This chart is intended to aid people in finding an approximate international equivalent ring size. Disabled World takes no responsibility for any calculation errors.

Printable Ring Size Chart

Printable chart of international costume, engagement and wedding ring sizes.
Printable chart of international costume, engagement and wedding ring sizes.
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Disabled World provides general information only. The materials presented are never meant to substitute for professional medical care by a qualified practitioner, nor should they be construed as such. Financial support is derived from advertisements or referral programs, where indicated. Any 3rd party offering or advertising does not constitute an endorsement.

• Cite This Page (APA): Disabled World. (2019, December 19). Ring Size Chart for Engagement, Wedding, Costume Rings. Disabled World. Retrieved January 31, 2023 from www.disabled-world.com/calculators-charts/size-ring.php

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