Ring Size Chart in India: How Ring Sizes Work

Ring sizes look simple, but several systems exist, and a ring size of 12 in one place may not equal a 12 in another. Understanding what sits behind the numbers saves you from ordering the wrong ring.

What a ring size really measures

A ring size describes the inside of the ring. Systems use either the inside diameter or the inside circumference in millimetres, with a numbering scale on top. The only universal truth is the physical measurement, so always translate a size into millimetres if you can.

The common systems

• US: a numerical scale, such as size 6, 7 or 8, with half sizes.
• UK: letters, such as N or P.
• European: the inside circumference in millimetres, for example 54.
• Indian: shops often use a numbered scale of their own. The numbering can vary between jewellers, so confirm what the number means in millimetres.

Reference points

For orientation, a few US sizes with their inside diameters:

• US 5: about 15.7 mm.
• US 6: about 16.5 mm.
• US 7: about 17.3 mm.
• US 8: about 18.1 mm.
• US 9: about 18.9 mm.

The circumference is the diameter times 3.14, so US 7 is around 54 mm. Use these as a guide for converting, and rely on the jeweller's own chart for the final answer.

Why charts disagree

• Different scales start from different points.
• Some use diameter and others use circumference.
• Rounding differs between charts.
• Half sizes and in-between sizes are treated differently.

When two charts disagree, go back to the millimetre measurement.

Finding your size

The most reliable way is to measure the inside diameter of a ring that fits well. See how to measure your ring size at home. A jeweller can also size you with metal sizers, which is the best method.

Which finger and hand

Fingers differ, and your dominant hand is often slightly larger. Measure the finger the ring will be worn on.

Width and size

A wider band feels tighter than a slim one in the same size. If you are choosing a band of 6 mm or more, you may want a half size larger.

Size and time of day

Measure when your hands are at a normal temperature. Fingers are often smallest in the morning and in the cold, and largest after exercise or in heat.

If you are between sizes

Choose the larger, especially for wide bands, or ask the jeweller about half sizes. See matching couple rings and bands.

Resizing

Most plain rings can be resized by a size or two. Eternity bands and some designs cannot. See resizing and repairing rings: what is possible.

Common questions

Is an Indian size the same as a US size? Not necessarily. Always ask the jeweller to confirm in millimetres.

Can I use a printed ring sizer? A printed sizer can help, but printing scales vary. Check that the printout matches a ruler.

Do men and women use different charts? No. The same scale applies.

A short checklist before you order

Confirm the system used in the listing (Indian, US, UK or European). Ask for the inside diameter in millimetres. Check whether half sizes are available. Ask about resizing and about the exchange policy for sizing errors. Keep the measurement you used, so that if you reorder, you can give the same figure again. These four checks catch almost every sizing mistake before it happens.

Use our guide

Our size guide explains how we size rings, and you can book an appointment to be measured properly.