Outside dimensions is 11 5/8 and inside is 10 5/8 inch

The Calphalon Glass Lid is a round silver lid made of glass, suitable for use on both electric and gas stoves. This replacement lid is specifically designed for Calphalon cookware and includes a secure fit to cover your pots and pans. The glass material allows for easy monitoring of the food while cooking, and the smooth surface coating ensures even heat distribution. Upgrade your kitchen with this high-quality Calphalon lid for added convenience and functionality.