How do I figure out my ring size in the UK?

Short answer

In the UK, ring sizes use letters from A to Z. Use a printable ring sizer or measure a ring you own, then match the measurement to a UK letter chart. For the most reliable result, visit a local jeweller for a free professional fitting.

UK ring sizes are different from US sizes, so always use a UK chart. A printable ring sizer from a jeweller's website is a good starting point. Print it at actual size, cut out the strip, and wrap it around the base of your finger. Read the letter where the arrow meets the scale. If you already wear a ring, you can measure its inner diameter in millimetres and match it to a UK size chart.

Keep in mind that your ring size can vary by finger, hand, and time of day. Measure in the evening when your hands are warm, and avoid measuring after exercise, in cold weather, or first thing in the morning. If you are between sizes, choose the larger one, as it is easier to make a ring smaller than larger.

For engagement and wedding rings, which you will wear every day, a professional fitting is worth it. Most jewellers in the UK offer free sizing and can advise on width, comfort, and how different metals affect fit. If you are buying online, check the return and resize policy before you order. Many jewellers offer one free resize within a certain period, but that can vary, so always ask.