Ring Sizing

The best time of day to measure is in the evening, when fingers are largest. Avoid measuring when cold, as fingers are at least half a size smaller and when measuring your finger, always refrain from using a string, they tend to stretch, which can result in wrong size. ALWAYS use a paper strip about 1/2 inch width. You can then bring this piece of paper into the store, where we will be able to get a good estimate of sizing.

The simplest way to find your partner's ring size is to 'borrow' a ring they already wear. As engagement and wedding rings are typically worn on the third finger of the left hand, it's perhaps unlikely that that finger is already adorned.

( If your partner is likely to notice the disappearance of a ring, then carefully draw around the inside of the ring on a piece of paper, for a more approximate size guide )

Your partner's friends and family are also a great source of help if you're still struggling to find the right size. They may be better placed to get the ring size without raising suspicion, so if you can enlist their help, take advantage of it. Just be sure that they will keep your secret if you want the proposal to be a surprise.

 If in doubt, choose a slightly larger size. It is easier to make a larger ring smaller without damaging the integrity of the piece, and it will also help to salvage the romance of the moment if the ring is a little too large than if it simply won't go onto your beloved's finger.

Size Conversion Guide

U.K. USA / CND Diameter (in millimeters) Circumference (in millimeters)
F 23/4 13.7 43.65
G 31/4 14.3 44.90
H 4 14.7 46.20
I 41/2 15.1 47.45
J 43/4 15.5 48.70
K 51/2 15.9 49.95
L 53/4 16.3 51.25
M 61/4 16.7 52.45
N 63/4 17.1 53.70
O 71/4 17.5 55.00
P 73/4 17.9 56.25
Q 8 18.3 57.50
R 83/4 18.7 58.75
S 91/4 19.1 60.00
T 93/4 19.5 61.25
U 10 19.9 62.50
V 101/2 20.3 63.75
W 11 20.7 65.00
X 111/2 21.1 66.30
Y 12 21.5 67.50
Z 121/2 21.9 68.75

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