Terms & Conditions
Effective: May 2026
Welcome to Ring Size Calculator — your free online ring size calculator, ring size chart, printable ring size chart, mens ring size chart, and o-ring size calculator tool.
1. Educational Purpose Only
This ring size guide and ring size calculator provides estimates based on ISO 8653:2016 chart data. It helps you learn how to measure ring size at home and measure ring size with calibration. However, finger size varies with temperature, time of day, and jeweler manufacturing tolerances. Always verify with a professional jeweler for engagement or expensive rings.
2. No Liability
We are not liable for incorrect sizing, resizing costs, or purchases based on our ring size chart, average ring size for women reference, or ring size adjuster recommendation. Use at your own risk.
3. Free Use
You may use this tool as a ring size app alternative free for personal use. Do not scrape, copy, or republish our ISO chart data without attribution.
4. External Links
We may link to jewelers. We are not responsible for their content.
5. Contact
Questions? Email vanshrajgupta777@gmail.com — mention feature request or sponsorship inquiry.