Ring Size Chart
The best way to measure your ring size is to use a ring measuring tool. Another method is to cut a piece of paper to match the thickness and width of the ring you want to purchase, and then wrap it around your finger to measure. There is also a way to measure the inside diameter of a ring you already have.
One thing to always consider when measuring the size of a ring is that, depending on the design of the ring band, you may need to choose different sizes. Wide bands, measuring 6mm or wider, should be ordered approximately half a size larger than your normal size.