React Big Calendar is a calendar component built for React that displays events in a Google Calendar or Outlook-like interface.
The tool solves the problem of rendering calendar views in React applications by providing a modern, flexbox-based component that works in contemporary browsers. Rather than using the older tables-and-captions approach, it builds calendar layouts with flexbox, making it responsive and easier to style. The component handles multiple views and event display natively within React.
React Big Calendar requires you to choose and configure a date formatting and localization library before use; the tool supports Moment.js, Globalize.js, date-fns, or Day.js. It ships with compiled CSS that works out of the box, but also provides SASS files with customizable variables for teams that want to match their application's styling. The tool suits projects that need a full-featured calendar UI without building from scratch. The README notes that the project was inspired by Full Calendar, though it makes no direct comparison. You should be aware that the calendar's container element must have an explicit height set, or the component will not display.
The project maintains an active community presence with a Slack channel for discussion and collaboration. Development includes starter templates and examples covering common patterns like drag-and-drop functionality, TypeScript integration, and modern build tooling. The tool accepts translations, with documentation available in multiple languages.
