Reference
Ring size conversion charts
Every size, converted between all five systems used around the world, with the inside diameter and circumference in millimetres. Pick your size, or measure it with the sizer.
Every size, converted between all five systems used around the world, with the inside diameter and circumference in millimetres. Pick your size, or measure it with the sizer.
All 58 pages
UK size F½UK size FUK size G½UK size GUK size H½UK size HUK size IUK size J½UK size JUK size K½UK size KUK size L½UK size LUK size M½UK size MUK size N½UK size NUK size O½UK size OUK size P½UK size PUK size Q½UK size QUK size R½UK size RUK size S½UK size SUK size T½UK size TUK size U½UK size UUK size V½UK size VUK size W½UK size X½UK size Y½UK size Z½US size 10.5US size 10US size 11.5US size 11US size 12.5US size 12US size 13US size 3.5US size 3US size 4.5US size 4US size 5.5US size 5US size 6.5US size 6US size 7.5US size 7US size 8.5US size 8US size 9.5US size 9
Work out your own
These pages are worked examples. Put your own details in and get a figure matched to your piece.
Open the ring sizer