It is important to understand whether a ring shown here will fit your finger.
Ring sizes are shown in the description with three measurements, like this: size M/6¼ /16.8mm internal diameter
The the first letter code (M) is the size code used in Australia, UK, New Zealand, Ireland, South Africa. The second fractional number is the size code used in north America (USA, Canada, Mexico). The third number is the internal diameter in mm.
Codes used internationally for ring sizes vary widely from country to country and there is a certain lack of agreement about standards. Although there are many examples of International Ring Size tables on the web, these vary considerably and cannot be used reliably. Consequently, if you do not know your Aust/UK or north American ring size then the most reliable measurement is the internal circumference of the ring. Most, but not all, European countries use this value directly as their standard ring size. A table showing these various values is shown at the end of this section.
Perhaps the best option for determining your ring size is to have it measured by a local jeweller. But it is also possible to do it yourself.
Measuring Your Finger
Your ring should fit your finger comfortably; snug enough so that it will not fall off, but loose enough to slide over your knuckle. When determining the ring size you need it is the knuckle that needs to be measured.
Finger size changes depending on the time of day and the weather. For best results measure your finger size:
- At the end of the day and when your fingers are warm (Fingers are smaller in the early morning and when cold.)
- Measure finger size 3 to 4 times to eliminate an erroneous reading.
Avoid using string or paper to measure ring size as these materials can stretch or twist, yielding an inaccurate measurement.
The circumference is easier to measure than the diameter. A simple method is to wrap sticky tape (that doesn't stretch) around the knuckle of your finger such that the ends overlap. Then cut the tape to take it off your finger. Then roll the tape out flat and measure the distance between the cut ends. This is the circumference of your knuckle.