Custom Ring Sizes

Ring sizing gauges and finger gauges as well as published charts do not always agree. Add to this that there are two conflicting methods of reading ring gauges so it is quite common for ring sizes to vary slightly from one workshop or jeweler to another. The ring sizing information presented here is the result of a conscientious study and comparison of various sources and is consistent with the instruments and measuring technique that we use in our workshop.

Ring Size Chart

Inside	Inside	Inside	Inside	Number Sizes
Diameter	Diameter	Circumference	Circumeference	US / CANADA
(inches)	(mm)	(inches)	(mm)	Standard
0.618	15.7	1.941	49.30	5
0.634	16.1	1.991	50.60	5.5
0.65	16.5	2.041	51.8	6
0.666	16.9	2.091	53.1	6.5
0.682	17.3	2.141	54.4	7
0.698	17.7	2.192	55.7	7.5
0.714	18.1	2.242	56.9	8
0.73	18.5	2.292	58.5	8.5
0.746	18.9	2.342	59.2	9
0.762	19.4	2.393	60.8	9.5
0.778	19.8	2.443	62.1	10
0.794	20.2	2.493	63.3	10.5
0.810	20.6	2.543	64.6	11
0.826	21	2.594	65.9	11.5
0.842	21.4	2.644	67.2	12
0.858	21.8	2.694	68.4	12.5
0.874	22.2	2.744	69.7	13
0.89	22.6	2.795	71	13.5
0.906	23	2.845	72.3	14
0.922	23.4	2.895	73.5	14.5

Rings and gauges are hard metal objects that can be measured exactly, but your finger is flesh and bone. Your finger is not round and it cannot be measured with the same degree of accuracy as the ring. At the end of the day, the right ring is one that will stay on comfortably. Average ring finger sizes may be useful as a point of reference for people who are not very good at measurements. These are offered to help you know if your calculations are reasonable.

Average adult women size 6 to 8 or L to Q
Most American jewelers get women’s samples in size 7
Average adult man size 9 to 11 or J to W
Most American jewelers get men’s samples in size 10

Finger sizes sometimes do not correspond to body size. Finger sizes also are prone to change with temperature, humidity, exercise, what you have been eating, time of day, time of the month, pregnancy and other factors. Dominant hand is usually 1/2 size larger, so if you are right handed and have a size 7 ring that fits the left hand it is reasonable to guess that a 7 1/2 will fit the right hand. Quarter sizes are offered to help you get the best fit, however quarter sizes make more difference on smaller fingers than on large fingers.

The best size is usually the ring that fits snugly and gives a little resistance when you take it off. Wider rings should be a little looser that narrow rings.
Men take note that if you are not used to wearing a ring, the proper size will probably feel tight a first. Many men loose their wedding rings because they choose sizes that are too loose.