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Find Your Perfect Ring Size
Use the quick finder or the full chart. Measure an existing ring or your finger—then compare. For comfort, most people prefer a slightly looser fit for wider bands.
Place a ring on a ruler and measure the inner diameter in millimeters (edge to edge, inside the circle). Avoid measuring the outer edge.
Wrap a strip of paper snugly around the base of your finger, mark the overlap, and measure the length. That’s your circumference.
Print at 100% (no “fit to page”). Use the scale bar below or a credit card width (85.6 mm) to verify accuracy.
Pro tips for accurate sizing
- Measure at the end of the day—fingers are smallest in the morning and in cold weather.
- Take at least two measurements and use the average.
- If you’re between sizes, size up by 0.5 for wider bands (≥ 5 mm).
- Knuckle larger than base? Choose a size that slides over the knuckle without pain.
Ring size chart
| US | Inner diameter (mm) | Circumference (mm) | UK | EU |
|---|---|---|---|---|
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Sizes are approximate and may vary by design. For precision, professional sizing at a jeweler is recommended.
FAQ
How do I convert between US and UK/EU sizes?
Use the chart above. Conversions are approximate; focus on inner diameter for best accuracy.
What if my ring falls between two sizes?
Choose the larger size, especially for wider bands. For thin bands, some prefer a slightly snug fit.
Can I resize later?
Many rings can be resized within 1–2 sizes depending on design. Eternity bands and tension settings may be limited.