How to Measure Your Ring Size

Getting the right ring size is crucial, especially for engagement rings and wedding bands. Here are the most accurate methods:

Method 1: Visit Us (Most Accurate)

Come to our Downtown LA workshop for a free professional ring sizing. We'll measure your finger at the knuckle and base to ensure a perfect fit.

Method 2: Use an Existing Ring

Measure the inside diameter of a ring that fits the intended finger. Compare to our size chart below.

Method 3: String/Paper Method

  1. Wrap string or paper strip around your finger
  2. Mark where it overlaps
  3. Measure the length in mm
  4. Divide by 3.14 to get diameter
  5. Match to size chart
Ring sizing

Ring Size Chart

US Size UK Size EU Size Diameter (mm) Circumference (mm)
4H46.514.946.8
4.5I47.815.348.0
5J4915.749.3
5.5K50.316.150.6
6L51.516.551.9
6.5M52.816.953.1
7N5417.354.4
7.5O55.317.755.7
8P56.618.157.0
8.5Q57.818.558.3
9R5918.959.5
9.5S60.319.460.8
10T61.619.862.1
10.5U62.820.263.4
11V6420.664.6
11.5W65.321.065.9
12X66.621.467.2

Pro Tips

  • Time of day matters: Fingers swell throughout the day. Measure in the afternoon for best results.
  • Temperature affects size: Cold fingers are smaller; warm fingers are larger.
  • Knuckle size: If your knuckle is larger than your finger base, size up slightly.
  • Wide bands: Wide bands (>6mm) may need a half size larger.
  • Dominant hand: Your dominant hand is usually slightly larger.

Not sure? We offer free resizing within 30 days of purchase for rings bought from FORGED PETAL.

Book Free Sizing
Engagement ring sizing