How to Measure Ring Size at Home

Sizing is the most common reason a ring comes back, and almost every error comes from one of two mistakes: measuring a finger that is cold, or measuring the wrong finger.

Method 1: an existing ring (most accurate)

1. Take a ring that fits the intended finger well.
2. Place it on a ruler and measure the inside diameter — edge to edge, inside.
3. Match the millimeter measurement to the chart on our size guide.

Do not measure the outside diameter. A 2 mm band and a 6 mm band of the same size have very different outside diameters.

Method 2: a strip of paper

1. Cut a strip about 5 mm wide and 100 mm long.
2. Wrap it around the base of the finger, snug but able to pass the knuckle.
3. Mark the overlap, lay it flat, measure to the millimeter.
4. That is the circumference; convert using the chart.

The two mistakes

Cold fingers. Fingers are up to half a size smaller in the cold. Measure at the end of the day, at room temperature, after walking around — not first thing in the morning in winter.

The knuckle. If your knuckle is significantly wider than the base of the finger, size for the knuckle and accept a slightly loose fit at the base, or choose a hinged shank. A ring that will not pass the knuckle will not be worn.

Wide bands

Bands 6 mm and wider need about half a size more, because they cover more of the finger and pass the knuckle with less room. Comfort-fit interiors offset some of this. Tell us the width when you order and we will adjust.

Surprise proposals

If you cannot measure the finger, borrow a ring they already wear on that hand — a ring finger is usually 0.5–1 size smaller than the index finger. If there is nothing to borrow, order a common size (US 6 or 7) and plan a free resize; we do the first resize free within 30 days where the design allows.

Half sizes and quarter sizes

We make half sizes as standard and quarter sizes on request. Below US 4 and above US 13, expect a small surcharge for the extra metal or the custom mandrel.