Face up size:
UK US European Ring Size Chart:
Size F 1/2 (US 3, EU 44):
- Inside Diameter: 0.555 in / 14.1 mm
- Inside Circumference: 1.74 in / 44.2 mm
Size G 1/2 (US 3.5, EU 45):
- Inside Diameter: 0.571 in / 14.5 mm
- Inside Circumference: 1.79 in / 45.5 mm
Size H 1/2 (US 4, EU 46.5):
- Inside Diameter: 0.586 in / 14.88 mm
- Inside Circumference: 1.84 in / 46.8 mm
Size I 1/2 (US 4.5, EU 47):
- Inside Diameter: 0.602 in / 15.29 mm
- Inside Circumference: 1.89 in / 48.0 mm
Size J 1/2 (US 5, EU 49):
- Inside Diameter: 0.618 in / 15.7 mm
- Inside Circumference: 1.93 in / 49.3 mm
Size K 1/2 (US 5.5, EU 50.5):
- Inside Diameter: 0.634 in / 16.1 mm
- Inside Circumference: 1.99 in / 50.6 mm
Size L 1/2 (US 6, EU 51):
- Inside Diameter: 0.650 in / 16.51 mm
- Inside Circumference: 2.04 in / 51.9 mm
Size M 1/2 (US 6.5, EU 52.5):
- Inside Diameter: 0.666 in / 16.92 mm
- Inside Circumference: 2.09 in / 53.1 mm
Size N 1/2 (US 7, EU 54):
- Inside Diameter: 0.682 in / 17.32 mm
- Inside Circumference: 2.14 in / 54.4 mm
Size O 1/2 (US 7.5, EU 55.5):
- Inside Diameter: 0.698 in / 17.73 mm
- Inside Circumference: 2.19 in / 55.7 mm
Size P 1/2 (US 8, EU 57):
- Inside Diameter: 0.714 in / 18.14 mm
- Inside Circumference: 2.24 in / 57.0 mm
Size Q 1/2 (US 8.5, EU 58.5):
- Inside Diameter: 0.730 in / 18.54 mm
- Inside Circumference: 2.29 in / 59.5 mm
Size R (US 9, EU 59.5):
- Inside Diameter: 0.746 in / 18.95 mm
- Inside Circumference: 2.34 in / 60.8 mm
Size R 1/2 (US 9.5, EU 60.5):
- Inside Diameter: 0.762 in / 19.35 mm
- Inside Circumference: 2.39 in / 61.5 mm
Size S 1/2 (US 10, EU 61.5):
- Inside Diameter: 0.778 in / 19.76 mm
- Inside Circumference: 2.44 in / 62.1 mm
Size T 1/2 (US 10.5, EU 62.5):
- Inside Diameter: 0.794 in / 20.17 mm
- Inside Circumference: 2.49 in / 63.4 mm
Size U 1/2 (US 11, EU 64):
- Inside Diameter: 0.810 in / 20.57 mm
- Inside Circumference: 2.54 in / 64.6 mm
Size V 1/2 (US 11.5, EU 65.5):
- Inside Diameter: 0.826 in / 20.98 mm
- Inside Circumference: 2.59 in / 65.9 mm
Size X 1/2 (US 12, EU 68):
- Inside Diameter: 0.842 in / 21.39 mm
- Inside Circumference: 2.65 in / 67.2 mm