Terms of Use

Last updated: October 2026.

General guidance only — not professional fitting

RingSizes provides general information about ring sizing, computed from the standard US formula and ISO 8653 as published. It is not professional jewellery advice, and it is not a substitute for an in-store fitting with physical sizers. Individual fit varies with finger shape, temperature, band width and knuckle size — for purchases that cannot be resized or exchanged, always verify your size with a jeweller before ordering.

No warranty

The site and its calculators are provided "as is" without warranties of any kind. Converted sizes are formula outputs, not guarantees about any individual ring or finger. National manufacturer standards can differ from published formulas by around a size. Your use of the site is at your own discretion and risk.

Acceptable use

You may use the site freely for personal, non-commercial purposes. Scraping, republishing the tools or content as your own, or using the site in ways that impair it for others is not permitted.

Liability

To the maximum extent permitted by law, RingSizes and its operators are not liable for any decisions made or actions taken based on the site's content or calculator outputs.

Contact

Questions about these terms: [email protected].