Shadcn Input Mask - Base UI & Radix UI

Shadcn Input Mask: Controlled, Formatted, and Accessible User Input#

The Shadcn Input Mask is a flexible and interactive masked input component designed for handling structured data entry such as phone numbers, credit card details, dates, OTPs, zip codes, and formatted identifiers in modern React applications. It comes with both Base UI and Radix UI support.

Featuring 6 input mask variants, it allows for customizable, interactive UI elements to ensure clean, valid, and consistent data entry.

Whether you're building a Base UI Input Mask or Radix UI Input Mask or creating fully customized formatted input systems, Shadcn Input Mask provides a scalable and production-ready solution for modern UI development.

Built with React and Tailwind CSS, it's the perfect solution for forms and user inputs that require specific patterns or formatting.

What is Shadcn Input Mask?#

The Shadcn Input Mask is a customizable input component that automatically applies a mask pattern to user input. This ensures that the data entered follows the correct format (e.g., phone numbers, dates, credit card numbers).

The mask adapts to user input, guiding them through the expected structure while preventing incorrect formatting. It integrates seamlessly with React and supports validation and error handling.

Why Use Shadcn Input Mask?#

• Enforces Consistent Input Formats: Automatically formats user input using predefined mask patterns.
• Improves Data Accuracy: Prevents invalid formatting and reduces user input errors.
• Highly Customizable: Customize spacing, placeholders, focus states, validation styles, and layouts using Tailwind CSS.
• Accessible by Default: Supports keyboard navigation and accessibility-friendly input workflows.
• Responsive Layout Support: Works seamlessly across desktop, tablet, and mobile interfaces.
• Supports Dynamic & Real-Time Formatting: Ideal for payments, onboarding flows, and structured form systems.
• Production Ready: Ideal for SaaS applications, enterprise systems, dashboards, and modern web apps.

Features#

• 6 Variants Included:
  • Phone number mask (e.g., (###) ###-####),
  • Date mask (e.g., MM/DD/YYYY),
  • Credit card number mask,
  • Time mask (e.g., HH:MM),
  • Custom mask (e.g., alphanumeric),
  • Zip code mask (e.g., #####-####).
• Base UI Support: Compatible with scalable Base UI component architectures and modern React applications.
• Auto-formatting: Automatically formats the input value based on the defined mask pattern while the user types.
• Clear Instructions: Display placeholders to guide users, showing them how the input should be formatted.
• Custom Masking: Define your own patterns using regex or pre-defined formats for a wide variety of use cases.
• Input Validation: Ensure that only valid characters are entered for the corresponding mask type (numbers, letters, symbols).
• Accessible: Proper aria-* attributes ensure the input field is accessible for screen readers and fully keyboard-navigable.
• Customizable: Easily modify the mask patterns and appearance to fit your specific use case using Tailwind utilities.

Production Tips#

• Use Placeholder Text: Show a placeholder example (e.g., (XXX) XXX-XXXX) to guide users through the expected input format.
• Debounce or Validate on Blur: For fields with complex masks (like credit cards or dates), consider debouncing or validating the input once the field loses focus to avoid excessive computation.
• Error Handling: Display clear error messages if the user input doesn't match the expected format, using Shadcn Form components for validation and feedback.
• Consistent Formatting: Keep a consistent input mask pattern across your application for fields that require the same structure (e.g., phone numbers, zip codes).
• Mobile Considerations: Ensure that numeric keypads are triggered on mobile devices for relevant fields (like phone numbers and credit card inputs).
• Performance with Large Inputs: If you are applying masks to long inputs, ensure that the masking logic is performant to prevent UI lag. Use optimized libraries if needed.

Integration With Other Components#

The Shadcn Input Mask integrates seamlessly within the Shadcn UI ecosystem - compatible with shadcn/ui components components for building structured, interactive forms.

Pair Shadcn Input Mask with Shadcn Form to ensure validation and a smooth user experience. Combine it with Shadcn Button for submit, reset, or action triggers, and use Shadcn Tooltip to provide guidance on input formats.

For date or time inputs, integrate with Shadcn Date Time Picker to create comprehensive selection workflows. For payment forms, pair it with Shadcn Card to display relevant credit card information or user account details.

In data-driven interfaces, Shadcn Input Mask can also work with Shadcn Table to filter rows dynamically. Also, you can integrate it with Shadcn Select and Shadcn Dialog for contextual selection and modal workflows.

This makes Shadcn Input Mask a versatile shadcn/ui component for building precise, interactive, and user-friendly React forms.

Base UI Input Mask Support#

The Base UI Input Mask implementation of Shadcn Input Mask provides a flexible and composable foundation for building highly customized form experiences and scalable data-entry workflows. It offers excellent Tailwind CSS integration and responsive customization for phone numbers, dates, credit cards, verification fields, and structured input patterns in modern React applications.

For migration guidance and implementation details, read the detailed guide on how to Migrate from Radix UI to Base UI, which explains the differences, migration strategy, and implementation best practices.

Radix UI Input Mask Support#

The Radix UI Input Mask approach focuses on accessibility, structured primitives, and production-ready form behavior. It is ideal for authentication forms, payment systems, onboarding flows, enterprise applications, and interfaces requiring reliable formatted input experiences with consistent validation and user-friendly data entry.

FAQs#