TimeZoneCalculator is a free WordPress plugin designed to assist users in managing time across different time zones. It is particularly useful for businesses and individuals who require precise scheduling for events involving participants from various regions. This plugin features a fully configurable settings page, allowing users to customize their experience through a graphical user interface or manual input. It integrates seamlessly with WordPress, providing multi/sidebar and dashboard widgets, as well as a display clock in the WordPress Admin Bar.

The plugin also includes a dedicated calculator section in the Tools menu that allows for individual timezone selection for each user. It supports Ajax refresh functionality and is fully compatible with HTTPS/SSL/TLS sites. Additionally, developers can utilize the built-in API for further customization, making it a versatile tool for a wide range of applications. TimeZoneCalculator is also multisite network compatible and offers a clean uninstall option for ease of use.