Ring Size Guide

Method 1 — Measure a Ring You Own

1. Select a ring that fits the intended finger comfortably.
2. Place it flat on a hard surface.
3. Lay a ruler across the inside of the ring and measure the distance across the inner opening at its widest point. This is the inner diameter. Do not measure from the outer edge.
4. Find your measurement in the diameter column of the chart below.

Method 2 — Measure Your Finger

1. Cut a strip of paper about 1 cm wide and 10 cm long, or use a piece of string.
2. Wrap it snugly around the base of the intended finger — comfortable, not tight.
3. Mark where the strip overlaps itself with a pen.
4. Lay the strip flat against a ruler and measure the length from the end to the mark in millimeters. This is your finger circumference.
5. Match to the circumference column in the chart below.

Fingers expand in warmth and contract in the cold. Measure at a comfortable room temperature for a consistent reading.

Fingers are slightly larger in the afternoon. An afternoon measurement gives a more practical fit for everyday wear.

If your knuckle is noticeably wider than the finger base, measure both. Choose a size that slides over the knuckle comfortably without being loose at the base.

Wider bands sit higher on the finger and feel snugger. For bands wider than approximately 6mm, sizing up by half a step often gives a better fit.

When a measurement falls between two sizes, go with the larger one. A ring that fits slightly loose is more comfortable than one that is difficult to remove.

Measure two or three times and average the results. Repeated readings are especially important with the paper strip method, which can shift slightly.

Measure the inner diameter of a well-fitting ring and compare it to the diameter column in the chart above, or wrap a strip of paper around your finger, measure the length, and match it to the circumference column. Both methods are explained step by step in the sections above.

Place the ring flat on a hard surface. Using a ruler, measure straight across the inner opening at its widest point in millimeters. That measurement is the inner diameter. Find it in the diameter column of the size chart above.

Choose the larger size. A ring that is slightly generous in fit is more comfortable for daily wear than one that is difficult to remove. If you are choosing a wide band, consider this when deciding.

Yes. Wider bands sit higher on the finger and contact more surface area, which can make the same nominal size feel tighter than a narrower band. For bands wider than approximately 6mm, sizing up by half a size is a useful guide.

Yes. Ring size can change with age, weight fluctuations, pregnancy, and seasonal temperature shifts. If significant time has passed since you last measured, remeasuring before ordering is a good idea.

The most reliable approach is to borrow one of their existing rings and measure the inner diameter as described in Method 1 above. You can also ask a close friend or family member who may already know their size. When in doubt, slightly larger is easier to address than too small.

Round to the nearest value in the chart. If the measurement falls between two sizes, choose the larger one. Confirm the measurement is the inner circumference (not the outer), and remeasure once or twice if unsure.