Find your perfect fit
A beautifully chosen ring should feel as considered as its design. Use this guide to estimate your ring size before ordering. For the most accurate result, have your finger measured by a professional jeweler, especially for a valuable or made-to-order ring.
Illustration only, not an actual-size ruler or printable sizing tool. Use a physical millimeter ruler or ring-sizing tool.
Measure a ring you already wear
- Choose a ring that fits comfortably on the finger you intend to wear your new ring on.
- Place it on a flat surface and measure its inside diameter in millimeters, straight across the center from one inner edge to the other. Do not include the metal band.
- Compare your measurement with the chart below. Home measurements are estimates, so confirm your size professionally if you are unsure.
Measure your finger
- For the best home measurement, use a ring-sizing tool and follow its instructions.
- If you do not have one, wrap a narrow strip of paper around the base of your finger. Keep it snug without squeezing.
- Mark where the paper overlaps, then lay it flat and measure the length in millimeters. This is your finger’s approximate circumference.
- Compare the measurement with the chart. Check that your chosen size will also pass comfortably over your knuckle.
A paper measurement is only a starting point. Avoid stretchy string, which can give an inaccurate result.
International ring size chart
The measurements and EU equivalents below are approximate and rounded. EU sizing generally corresponds to the inner circumference in millimeters. Sizing can vary slightly between jewelers and sizing tools. Confirm the sizing system when placing your order.
| US size | Inside diameter (mm) | Inside circumference (mm) | Approximate EU size |
|---|---|---|---|
| 3 | 14.1 | 44.2 | 44 |
| 3.5 | 14.5 | 45.5 | 46 |
| 4 | 14.9 | 46.8 | 47 |
| 4.5 | 15.3 | 48.0 | 48 |
| 5 | 15.7 | 49.3 | 49 |
| 5.5 | 16.1 | 50.6 | 51 |
| 6 | 16.5 | 51.9 | 52 |
| 6.5 | 16.9 | 53.1 | 53 |
| 7 | 17.3 | 54.4 | 54 |
| 7.5 | 17.7 | 55.7 | 56 |
| 8 | 18.1 | 57.0 | 57 |
| 8.5 | 18.5 | 58.3 | 58 |
| 9 | 19.0 | 59.5 | 60 |
| 9.5 | 19.4 | 60.8 | 61 |
| 10 | 19.8 | 62.1 | 62 |
| 10.5 | 20.2 | 63.4 | 63 |
| 11 | 20.6 | 64.6 | 65 |
| 11.5 | 21.0 | 65.9 | 66 |
| 12 | 21.4 | 67.2 | 67 |
| 12.5 | 21.8 | 68.5 | 69 |
| 13 | 22.2 | 69.7 | 70 |
Tips for a comfortable fit
- Measure when your hands are at a normal temperature, ideally later in the day. Cold fingers can measure smaller, while heat can cause swelling.
- Repeat your measurement on more than one occasion before choosing a size.
- Measure the intended finger on the correct hand. The same finger can differ in size between hands.
- Your ring should sit comfortably at the base of your finger and pass over the knuckle with slight resistance.
- Wider bands can feel tighter than narrow bands. Ask a jeweler to measure you with a sizing band of a similar width.
- If you fall between sizes or have a larger knuckle, seek professional fitting advice rather than relying on the chart alone.
Need help choosing your size?
Contact Eze Jewelry at sales@ezejewelry.com before ordering if you are unsure about your size or which sizing system to use. Include the ring you are interested in and any professional sizing measurements you have.
Resizing suitability depends on the ring’s design, setting, and materials. Please ask about the specific ring before purchasing rather than assuming it can be resized.