Bounce rate is a web analytics metric that measures the percentage of website visitors who leave a website after viewing only one page, without interacting with any other pages on the site.

When a visitor arrives on a website and does not engage further by clicking on any other pages or links, it is considered a "bounce."

The bounce rate is calculated by dividing the number of single-page visits by the total number of visits to the site and expressing the result as a percentage.

A high bounce rate can indicate that a website's landing page or content is not relevant or engaging to the visitor, or that the website's navigation and design are not user-friendly.

Bounce rate can be used to identify areas for improvement in a website's user experience and content strategy, and is often used in conjunction with other web analytics metrics to evaluate website performance.