Ring Size Guide
Finding your perfect ring size is simple with a few easy methods. Use the tips below to ensure a comfortable and secure fit.
General Tips
Your fingers can swell slightly throughout the day — measure in the evening for the most accurate size.
- Avoid measuring when your hands are cold, as fingers shrink slightly.
- A ring should fit snugly but slide over the knuckle with slight resistance.
Method 1: Measure a Ring You Own
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Choose a ring that fits the intended finger and measure its inner diameter (in mm) using a ruler.
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Match the measurement with the chart below.
Method 2: Use String or Paper
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Cut a thin strip of paper or string.
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Wrap it around the base of your finger — not too tight or too loose.
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Mark where the ends meet and measure the length (in mm).
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Match the circumference with the chart below.
Ring Size Conversion Chart
| Â US/Canada | Â Diameter (mm) | Â Circumference (mm) |
| Â 5 | Â 15.7Â | Â 49.3 |
| Â 6 | Â 16.5 | Â 51.9 |
| Â 7 | Â 17.3 | Â 54.4 |
| Â 8 | Â 18.1 | Â 57.0 |
| Â 9 | Â 19.0 | Â 59.5 |
| Â 10 | Â 19.8 | Â 62.1 |
Need Help?
If you’re unsure or between sizes, feel free to contact us at hello@echoandcostudio.com — we’ll be happy to assist you.