Ring Size Guide: How to Measure at Home

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Ring Size Guide: How to Measure at Home

June 2026 · 3 min read

No sizing kit? No problem. A strip of paper, a ruler, and a few minutes are all you need to find a reasonably accurate ring size at home.

What you'll need

A thin strip of paper (about 10cm long and 5mm wide works well), a pen, a ruler, and — ideally — a ring that already fits the finger you're measuring for.

Method 1: Measure a ring you already own

  1. Choose a ring that already fits the intended finger comfortably.
  2. Place it on a ruler and measure the internal diameter — the distance straight across the inside of the band, in millimetres.
  3. Compare that measurement against a standard ring size chart to find the closest match.

Method 2: Measure your finger directly

  1. Wrap the paper strip around the base of your finger, where the ring will sit.
  2. Mark the point where the paper overlaps, then lay it flat and measure the length with your ruler — this is your finger's circumference.
  3. Match this measurement against a ring size chart to find your size.
"Measure in the evening, when fingers are at their most 'normal' size — not first thing in the morning or after exercise."

Tips for a more accurate result

  • Measure at the end of the day, when fingers tend to be slightly larger than in the morning.
  • Avoid measuring right after exercising, or in very hot or cold conditions — temperature affects finger size.
  • Measure two or three times and take the most consistent result.
  • If you're between two sizes, it's usually better to size up slightly, especially for wider band styles.

A quick reference

Internal diameter UK size US size
14.9mm H 4
16.5mm K 5.5
18.2mm N 7
19.8mm Q 8.5
21.4mm T 10

Figures are approximate — for the most reliable fit, we recommend visiting a jeweller for an in-person sizing where possible.

If you're ever unsure between two sizes, feel free to reach out to us before ordering — we're always happy to help you find the right fit.

Not sure which size to order?

Message us with your measurements and we'll help you find the right fit.

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