How to Measure Your Ring Size at Home

Getting the size right matters, especially for a made-to-order ring. Here are simple ways to find a ring size at home, along with tips for getting an accurate result.

Method 1: Measure a ring that already fits

  1. Choose a ring that fits the intended finger comfortably.
  2. Lay it on a ruler and measure the inside diameter in millimetres, from edge to edge at the widest point.
  3. Compare your measurement with the chart below.

Method 2: Measure the finger

  1. Wrap a thin strip of non-stretchy paper around the base of the finger.
  2. Mark where the paper meets, then measure that length in millimetres. This is the circumference.
  3. Divide by 3.14 to get the diameter, then check the chart below.

This method is less exact than measuring a ring, because paper can sit too tight or too loose. For the most reliable result, have the finger measured at a local jeweller.

Ring size chart (Canada and US)

Size Inside diameter
4 14.9 mm
5 15.7 mm
6 16.5 mm
7 17.3 mm
8 18.2 mm
9 19.0 mm

Measurements are approximate.

Tips for an accurate result

  • Measure at the end of the day, when fingers are at their usual largest size.
  • Avoid measuring when your hands are very cold or very warm.
  • Make sure the ring can slide over the knuckle.
  • Measure more than once and compare the results.

Check with us before you order

Every Vancity Diamonds piece is made to order in your size, so it's worth confirming your size first. If it doesn't fit, you can exchange it within 15 days of delivery under our returns policy, but a remade ring takes another 3–4 weeks. Between sizes or not sure? Contact us before ordering and we'll help.