Bounce Rate represents the percentage of visitors who enter a site and then leave after visiting one page.
SimilarWeb calculates Bounce Rate by dividing all sessions by the single-page sessions.
Using this metric
Bounce Rate can reflect how well a site is doing at retaining its visitors. An abnormally high bounce rate is generally a warning that people are leaving a website, and aren’t willing to stick around to explore. Use this metric to understand what is the “real” number of engaged visits, and to analyze the likelihood of a visitor to complete the website goal (page views, purchase etc.).