Ring Size Chart

Use our ring size conversion chart to find the perfect fit. Search the table below by entering your current ring size, country sizing, or measurement to quickly find the matching conversion.

Tip: If you are measuring an existing ring, measure the inside diameter of the ring (the distance across the inside edge of the ring), not the outside edge. For the most accurate fit, measure your finger when your hands are warm and relaxed.

Find your ring size:

↔ Swipe left and right to view all information

UK / Australia	US / Canada	Diameter (mm)	Diameter (in)	Circumference (mm)	Circumference (in)
-	0	9.91 mm	0.390″	31.2 mm	1.23″
-	0	10.72 mm	0.422″	33.7 mm	1.33″
-	0	11.63 mm	0.458″	36.5 mm	1.44″
-	¼	11.84 mm	0.466″	37.2 mm	1.46″
A	½	12.04 mm	0.474″	37.8 mm	1.49″
A ½	¾	12.24 mm	0.482″	38.5 mm	1.51″
B	1	12.45 mm	0.490″	39.1 mm	1.54″
B ½	1 ¼	12.65 mm	0.498″	39.7 mm	1.56″
C	1 ½	12.85 mm	0.506″	40.4 mm	1.59″
C ½	1 ¾	13.06 mm	0.514″	41.0 mm	1.61″
D	2	13.26 mm	0.522″	41.7 mm	1.64″
D ½	2 ¼	13.46 mm	0.530″	42.3 mm	1.67″
E	2 ½	13.67 mm	0.538″	42.9 mm	1.69″
E ½	2 ¾	13.87 mm	0.546″	43.6 mm	1.72″
F	3	14.07 mm	0.554″	44.2 mm	1.74″
F ½	3 ¼	14.27 mm	0.562″	44.8 mm	1.77″
G	3 ½	14.48 mm	0.570″	45.5 mm	1.79″
G ½	3 ¾	14.68 mm	0.578″	46.1 mm	1.82″
H	4	14.88 mm	0.586″	46.8 mm	1.84″
H ½	4 ¼	15.09 mm	0.594″	47.4 mm	1.87″
I	4 ½	15.29 mm	0.602″	48.0 mm	1.89″
J	4 ¾	15.49 mm	0.610″	48.7 mm	1.92″
J ½	5	15.70 mm	0.618″	49.3 mm	1.94″
K	5 ¼	15.90 mm	0.626″	50.0 mm	1.97″
K ½	5 ½	16.10 mm	0.634″	50.6 mm	1.99″
L	5 ¾	16.31 mm	0.642″	51.2 mm	2.02″
L ½	6	16.51 mm	0.650″	51.9 mm	2.04″
M	6 ¼	16.71 mm	0.658″	52.5 mm	2.07″
M ½	6 ½	16.92 mm	0.666″	53.1 mm	2.09″
N	6 ¾	17.12 mm	0.674″	53.8 mm	2.12″
N ½	7	17.32 mm	0.682″	54.4 mm	2.14″
O	7 ¼	17.53 mm	0.690″	55.1 mm	2.17″
O ½	7 ½	17.73 mm	0.698″	55.7 mm	2.19″
P	7 ¾	17.93 mm	0.706″	56.3 mm	2.22″
Q	8 ¼	18.34 mm	0.722″	57.6 mm	2.27″
Q ½	8 ½	18.54 mm	0.730″	58.3 mm	2.29″
R	8 ¾	18.75 mm	0.738″	58.9 mm	2.32″
R ½	9	18.95 mm	0.746″	59.5 mm	2.34″
S	9 ¼	19.15 mm	0.754″	60.2 mm	2.37″
S ½	9 ½	19.35 mm	0.762″	60.8 mm	2.39″
T	9 ¾	19.56 mm	0.770″	61.4 mm	2.42″
T ½	10	19.76 mm	0.778″	62.1 mm	2.44″
U	10 ¼	19.96 mm	0.786″	62.7 mm	2.47″
U ½	10 ½	20.17 mm	0.794″	63.4 mm	2.49″
V	10 ¾	20.37 mm	0.802″	64.0 mm	2.52″
V ½	11	20.57 mm	0.810″	64.6 mm	2.54″
W	11 ¼	20.78 mm	0.818″	65.3 mm	2.57″
W ½	11 ½	20.98 mm	0.826″	65.9 mm	2.59″
X	11 ¾	21.18 mm	0.834″	66.6 mm	2.62″
X ½	12	21.39 mm	0.842″	67.2 mm	2.65″
Y	12 ¼	21.59 mm	0.850″	67.8 mm	2.67″
Z	12 ½	21.79 mm	0.858″	68.5 mm	2.70″
Z ½	12 ¾	22.00 mm	0.866″	69.1 mm	2.72″
-	13	22.20 mm	0.874″	69.7 mm	2.75″
Z1	13 ¼	22.40 mm	0.882″	70.4 mm	2.77″
-	13 ½	22.61 mm	0.890″	71.0 mm	2.80″
Z2	13 ¾	22.81 mm	0.898″	71.7 mm	2.82″
Z3	14	23.01 mm	0.906″	72.3 mm	2.85″
-	14 ¼	23.22 mm	0.914″	72.9 mm	2.87″
Z4	14 ½	23.42 mm	0.922″	73.6 mm	2.90″
-	14 ¾	23.62 mm	0.930″	74.2 mm	2.92″
-	15	23.83 mm	0.938″	74.8 mm	2.95″
-	15 ¼	24.03 mm	0.946″	75.5 mm	2.97″
-	15 ½	24.23 mm	0.954″	76.1 mm	3.00″
-	15 ¾	24.43 mm	0.962″	76.8 mm	3.02″
-	16	24.64 mm	0.970″	77.4 mm	3.05″

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