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How to Measure Your Ring Size

Ring Size Chart

Our ring sizes all use standard US measurements.

US Ring Size

Ring Diameter (mm)

Finger Circumference (mm)

5

15.7

49.0

6

16.5

51.5

7

17.3

54.0

8

18.1

57.5

  

How to determine your ring size:

Measure an existing ring that you own

This one is quick and simple! If you already own a ring that fits the intended finger, simply:

  • Measure the inside diameter of the ring in millimetres
  • Check the chart above in the "Ring Diameter (mm)" column to find the ring size

The Finger Circumference Method #2

At-home DIY solutions

Okay, okay -- we don't have all ring sizers lying around at home! But you can easily measure your finger at home with some common household items.

You will need a piece of thin string, dental floss or strip of paper; a pen; and a measuring tape or ruler.

  • Wrap the intended finger snugly with a piece of string/floss or strip of paper. 
  • Use a pen to mark where the string/floss/paper meets around your finger
  • Straighten out the string/floss/paper and measure it against a ruler in millimetres
  • Check the chart in the "Finger Circumference (mm)" to find the ring size

Tips for Measuring Your Ring Size

  • Make sure your fingers are at a "normal" size when you measure them. Fingers shrink a bit in cold weather, and they swell after you've had alcohol, after you've exercised.
  • If your knuckle is particularly big, you may want to choose a bigger ring size so that the ring can fit over the knuckle
  • Size differences between your left and right hand often exist! Fingers are also fickle creatures that like to change sizes through the seasons (eg when you're in hot weather, they may swell a little) and during pregnancy. 
  • What's a good fit like? Your ring should slip on easily, but be snug and slightly difficult to remove.