React DayPicker is a customizable date picker component for React that lets you add calendars and date selection interfaces to web applications.
The tool solves the problem of building flexible date selection UI by providing a React component with extensive customization options. It supports multiple selection modes including single days, date ranges, multiple days, and custom selections. The component relies on date-fns for date manipulation and formatting, and it renders as minimal markup that can be styled with CSS or any CSS framework.
DayPicker suits projects that need calendar functionality without being locked into a specific design system. It works well for applications requiring date range selection, single date pickers, or complex custom date selection logic. The tool is particularly valuable if you need localization support across many languages and calendar systems, including Persian, Hijri, Buddhist, Ethiopic, and Hebrew calendars through add-on packages. It also complies with WCAG 2.1 AA accessibility requirements. The component integrates straightforwardly with input fields and supports time zone handling.
The project maintains active community engagement through discussion forums and issue tracking. Development is organized around a monorepo structure with a dedicated documentation website. The codebase is written in TypeScript and compiled to both CommonJS and ESM formats, supporting React versions from 16.8 onward.