My buying rings online size guide

I am often contacted by customers who want to buy rings online and they ask me ‘what’s my ring size?’. Most of us are unaware of our UK ring size. So below I’ve detailed 2 easy methods for how to measure your ring size at home. Please note that these two methods for measuring your ring size at home are a rough guide for how to work out your ring size.

A more accurate way is to use this inexpensive ring size tool. The very best way to know your ring size is to have it professionally measured at your local high street jewellers.

measure your ring size 1
measure your ring size 2

Method One – Using finger measurement for rings using simple household items

  • To measure your finger size you’ll need a piece of paper, scissors, a ruler and a pencil
  • With this method you’ll learn how to work out ring size by measuring the circumference of your finger
  • Cut a strip of paper approximately 10mm wide and 100mm long
  • On the finger you want to wrap the paper around the WIDEST part of your finger
  • For some people the widest part of the finger is the middle knuckle. For others the widest part is the end nearest the hand.
  • Check that the strip of paper overlaps straight
  • Mark a line along the width of the paper where it overlaps
measure your ring size 3
measure your ring size 4
  • Shade out the part of paper that is not around your finger
  • Remove the paper, straighten it out along the edge of a ruler
  • Measure the part that was around your finger (this is the internal circumference)
  • Jot down the measurement on the paper
  • Use the chart below to find your ring size
Internal circumference
  • 48.7mm – J
  • 49.3mm – J 1/2
  • 50.0mm – K
  • 50.6mm – K 1/2
  • 51.2mm – L
  • 51.9mm – L 1/2
  • 52.5mm – M
  • 53.1mm – M 1/2
  • 53.8mm – N
  • 54.4mm – N 1/2
  • 55.1mm – O
  • 55.7mm – O 1/2
  • 56.3mm – P
  • 57.0mm – P 1/2
  • 57.6mm – Q
  • 58.4mm – Q 1/2
  • 58.9mm – R
  • 59.5mm – R 1/2
  • 60.2mm – S
  • 60.8mm – S 1/2
  • 61.4mm – T
  • 62.1mm – T 1/2
  • 62.7mm – U
  • 63.4mm – U 1/2
  • 64.0mm – V
  • 64.6mm – V 1/2
  • 65.3mm – W
  • 65.9mm – W 1/2
  • 66.6mm – X
  • 67.2mm – X 1/2
  • 67.8mm – Y
  • 68.5mm – Z
  • 70.4mm – Z+1
  • 71.0mm – Z+2
measure your ring size 5
measure your ring size 6

Method Two – Measuring your ring size using a ring that fits you

  • Pick the finger you want your new ring for
  • Do you have a ring at home that fits that finger?
  • If yes, then all you need is that ring and a ruler
  • Measure the inside diameter of the ring (that’s the hole inside the ring excluding the metal)
  • Write down this measurement in millimeters and use the chart below to find your UK ring size (this is the internal diameter)
  • The measurements below are very accurate but see if you can find the nearest measurement
measure your ring size 7
How to work out ring size using the internal diameter
  • 15.5mm – J
  • 15.7mm – J 1/2
  • 15.9mm – K
  • 16.1mm – K 1/2
  • 16.3mm – L
  • 16.5mm – L 1/2
  • 16.7mm – M
  • 16.9mm – M 1/2
  • 17.1mm – N
  • 17.3mm – N 1/2

 

  • 17.5mm – O
  • 17.7mm – O 1/2
  • 17.9mm – P
  • 18.1mm – P 1/2
  • 18.3mm – Q
  • 18.5mm – Q 1/2
  • 18.8mm – R
  • 19.0mm – R 1/2
  • 19.2mm – S
  • 19.4mm – S 1/2
  • 19.6mm – T
  • 19.8mm – T 1/2

 

  • 20.0mm – U
  • 20.2mm – U 1/2
  • 20.4mm – V
  • 20.6mm – V 1/2
  • 20.8mm – W
  • 21.0mm – W 1/2
  • 21.2mm – X
  • 21.4mm – X 1/2
  • 21.6mm – Y
  • 21.8mm – Z
  • 22.4mm – Z+1
  • 22.6mm – Z+2

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