You can measure the diameter of your finger by using a ruler or a measuring tape and measure the width of your finger or you can measure the circumference of your finger by wrapping a thread around your finger and measure the length of the thread. 

​

Find your size:

Size 5: Diameter - 15.5 mm, Circumference - 48.7 mm

Size 6: Diameter - 16.5 mm, Circumference - 52 mm

Size 7: Diameter - 17.3 mm, Circumference - 54.5 mm

Size 8: Diameter - 18.1 mm, Circumference - 57 mm

Size 9: Diameter - 19 mm, Circumference - 59.5 mm

Size 10: Diameter - 19.8 mm, Circumference - 62.2 mm

Size 11: Diameter - 20.7 mm, Circumference - 64.6 mm

Size 12: Diameter - 21, Circumference - 67 mm