ENDLESS DIAMONDS
Ring Size Guide
Learn how to measure ring size accurately for engagement rings, wedding bands, eternity rings, and custom jewelry. Use this ring size guide from Endless Diamonds in Houston to find a comfortable and secure fit before you order.
Visit a Showroom
The most accurate way to determine ring size is to visit one of our locations so our team can size your finger in person.
Measure an Existing Ring
If you already have a ring that fits well, compare its inside diameter with a ring size chart to estimate the correct size.
Use a String or Paper Strip
Wrap a thin strip of paper or string around your finger, mark the overlap, and measure the length to estimate your ring size.
Contact Our Team
If you are unsure, our team can help guide you through sizing options before you place an order.
How to Measure
Ways to Find Your Ring Size
Ring size can vary depending on finger shape, temperature, band width, and the time of day. For the most reliable result, measure your finger when your hands are at a normal temperature and avoid sizing when your fingers are very cold or swollen.
If you are shopping for an engagement ring, wedding band, or eternity ring, accurate sizing helps improve comfort and reduces the chance of needing adjustments later.
Measure an Existing Ring
Choose a ring that already fits the intended finger. Measure the inside diameter and compare it to a standard ring size chart.
Measure Your Finger
Wrap a strip of paper or string around the base of your finger. Mark where it overlaps, then measure the length and compare it to standard sizing.
Confirm With a Jeweler
If the ring is an important purchase such as an engagement ring, wedding ring, or eternity band, we recommend confirming the size with a jeweler or visiting our showroom.
Ring Size Chart
Standard US Ring Size Chart
Use this ring size chart as a general reference when comparing an existing ring or measuring your finger. If you are between sizes or ordering a wider band, contact our team for guidance before placing your order.
Eternity bands, wider bands, and certain custom rings may fit differently than standard bands.
View Ring Size Chart
| US Size | Inside Diameter (mm) | Finger Circumference (mm) |
|---|---|---|
| 4 | 14.8 | 46.8 |
| 4.5 | 15.2 | 47.8 |
| 5 | 15.6 | 49.3 |
| 5.5 | 16.0 | 50.3 |
| 6 | 16.45 | 51.9 |
| 6.5 | 16.9 | 53.1 |
| 7 | 17.3 | 54.4 |
| 7.5 | 17.7 | 55.7 |
| 8 | 18.2 | 57.0 |
| 8.5 | 18.6 | 58.3 |
| 9 | 18.9 | 59.5 |
| 9.5 | 19.4 | 60.8 |
| 10 | 19.8 | 62.1 |
| 10.5 | 20.2 | 63.4 |
| 11 | 20.6 | 64.6 |
| 11.5 | 21.0 | 65.9 |
| 12 | 21.4 | 67.2 |
| 12.5 | 21.8 | 68.5 |
| 13 | 22.2 | 69.7 |
Sizing Tips
Helpful Tips Before You Order
- Measure your finger at the end of the day when it is usually at its largest.
- Avoid measuring when your hands are cold, since fingers can temporarily shrink.
- Wider bands may fit more snugly and sometimes require a slightly larger size.
- If you are between sizes, contact us for guidance before ordering.
- For surprise proposals, measuring a ring the person already wears can be helpful.
Resizing
Can Rings Be Resized?
Some rings may be resized, but not all styles are eligible. The ability to resize depends on the design, metal type, stone placement, and structure of the ring.
- Eternity bands may have limited or no resizing options.
- Some custom pieces may not be resizable after production.
- Certain alternative metals may have limited resizing availability.
- Please contact our team before sending any ring in for resizing.
FAQ