Week Number Finder is a Chrome extension designed to conveniently display the ISO week number alongside an interactive calendar interface. It offers users an easy way to view the current week number directly from the extension badge, ensuring quick access without navigating away from their tasks. The extension's calendar UI presents the current month, highlighting the corresponding week number for each week, which enhances usability for planning and scheduling purposes.

Additionally, the Week Number Finder allows users to navigate through previous and next months, making it simple to find past and future week numbers. Users can also jump between years using a dropdown list, providing flexibility for long-term planning. This free tool is straightforward and effective, making it a valuable addition to the Chrome browser for those who need to track weeks efficiently.