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Ring Sizing at Home

If you need to determine your ring size and you don't have a professional gauge (or jeweler) handy, there's an easy way to get your measurement with just a few simple items you should have around the house.  Here's all you'll need; a sheet of paper, scissors, ruler (in millimeters), pen and tape.

Take the sheet of paper and cut out a strip that is 30 mm wide by 100 mm long.  Fold the sheet in thirds so that you end up with a piece that is 10 mm wide by 100 mm long.  Take the piece of folded paper and pull it back and forth across the edge of your table or counter top a few times so that it becomes a bit softer and more flexible.

Before making a measurement make sure that you are in a room that is at a standard room temperature of about 72 F / 22 C.  If the room is very warm your finger may swell or if it is very cold your finger may get thinner.  Also, keep in mind that on some days your body may hold more water than others and your fingers may swell a bit.  You may want to take the measurement a number of times over a 24 hour period to get a good average ring size.

Wrap the piece of paper around the area of the finger or toe where you intend to wear the ring and make a mark with your pen where the ends of the paper overlap.  Take the piece of paper and cut it about 10 mm longer than the mark on the paper.  Roll the paper into a ring so that the mark on the paper lines up with the other end of the paper and secure the two ends together with a small piece of tape (not too much, you may want to loosen the ring up to allow more clearance for your knuckle).  Take the ring and try it on, making sure that it comes on and off easily and does not bind on your knuckle.  If necessary, remove the tape, reset the length of the ring and try it again.  You may want to take these measurements a few times over the course of a day to make sure that it fits you well.  Better to spend the time now than have to pay to have an expensive ring resized or worse yet, remade!

Once you are happy with the size of the ring, cut it in half and carefully measure the length of the piece of paper using the millimeter scale on your ruler and then use the following table to convert the length of the paper to your ring size:

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length (mm) US British French German Japanese
44 3 F 44 14 4
45.2 3 1/2     14 1/2  
46.5 4 H 1/2   15 7
47.8 4 1/2 I 1/2   15 1/4 8
49 5 J 1/2   15 3/4 9
50.3 5 1/2 L 51 3/4 16  
51.5 6 M 52 3/4 16 1/2 12
52.8 6 1/2 N 54 17    13
54 7 O 55 1/4 17 1/4 14
55.3 7 1/2 P 56 1/2 17 3/4 15
56.6 8 Q 57 3/4 18    16
57.8 8 1/2     18 1/2 17
59.1 9     19    18
60.3 9 1/2     19 1/2 19
61.6 10 T 1/2   20    20
62.8 10 1/2 U 1/2   20 1/4 22
64.1 11 V 1/2   20 3/4 23
65.3 11 1/2     21    24
66.6 12 Y 67 1/2 21 1/4 25
67.9 12 1/2 Z 68 3/4 21 3/4 26
69.1 13     22    27

Submitted on: July 07, 2009 @ 8:35pm