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What Do I Need to Find My Ring Size?

Want to know how ring sizes are measured at home? All you need is a pen, scissors, a ruler, and either a flexible measuring tape or string. The final piece of the puzzle is our ring size chart, which you can use once you’ve measured your finger. Don’t worry, it’s easy!

How To Measure Ring Sizes at Home

To find your size, first, wrap the measuring tape (or string) around the base of the finger on which you plan to wear your ring. You want the string or tape to be snug, but not tight. Ideally, the measuring tape should be cloth — if you are struggling to wrap a measuring tape around your finger, just switch to a string to ensure your measurement is accurate.

Use a pen to mark the tape where it overlaps or cut the small piece of string with scissors. Then, simply measure the string in millimeters, or note how many millimeters it took to wrap the measuring tape around your finger.

Ring Sizes Chart

Finger
Circum.
(mm)
Ring
Diameter
(mm)
UK
Australia
EuropeUSAJapan
44.214.1F 1/24434
44.814.3G453.255
45.514.5G 1/2 3.5 
46.114.7H463.756
46.814.9H 1/24747
47.415.1I 4.25 
48.015.3I 1/2484.58
48.715.5J 4.75 
49.315.7J 1/24959
50.015.9K505.25 
50.616.1K 1/2 5.510
51.216.3L515.75 
51.916.5L 1/252611
52.516.7M 6.2512
53.116.9M 1/2536.513
53.817.1N 6.75 
54.417.3N 1/254714
55.117.5O557.25 
55.717.7O 1/2 7.515
56.317.9P567.75 
57.018.1P 1/257816
57.218.2    
57.618.3Q 8.25 
58.318.5Q 1/2588.517
58.918.8R598.75 
59.519.0R 1/2 918
60.219.2S609.25 
60.819.4S 1/2619.519
61.419.6T 9.75 
62.119.8T 1/2621020
62.720.0U 10.2521
63.420.2U 1/26310.522
64.020.4V6410.75 
64.620.6V 1/2 1123

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