Round Full-Eternity Ring

A well-chosen ring size should feel secure while still passing comfortably over the knuckle. Because fit varies by finger, band width, and design, use the guidance below as a starting point.

Printable PESO ring size guide (PDF)

Open and print the guide at 100% / Actual Size. Do not use “Fit to page.” Before measuring, check that the 50 mm calibration line on the printed guide measures exactly 50 mm.

Open the printable PESO ring size guide (PDF)

Best option: professional measurement

For the most reliable result, ask a jeweler to measure the intended finger with a professional ring sizer. If possible, use a sample with a band width similar to the ring you plan to order.

Using a ring that already fits

A jeweler can measure the inside diameter of a ring that fits the intended finger. Confirm that the existing ring has a similar profile and is worn on the same finger and hand.

Measure under normal conditions

• Finger size can change with temperature, time of day, and temporary swelling.
• A wider band can feel tighter than a narrow band in the same nominal size.
• Do not rely only on string, paper, or an uncalibrated screen measurement.

Check the product before ordering

Available sizes and resizing suitability depend on the specific design. Review the options shown on the product page. If your size is uncertain or is not listed, contact PESO before ordering.