CSS to Tailwind Converter
Paste vanilla CSS rules and instantly get the equivalent Tailwind CSS utility classes. Supports layout, flexbox, grid, spacing, typography, borders, shadows, and more — all processed privately in your browser.
Why Migrate to Tailwind CSS?
Tailwind CSS is a utility-first CSS framework that eliminates context-switching between HTML and CSS files. Instead of writing custom class names and maintaining large stylesheets, you apply small, composable utility classes directly in your markup.
This approach dramatically reduces CSS bundle size through automatic purging, enforces design consistency via a constrained design token system, and accelerates prototyping speed by keeping styles co-located with components.
How to Use This Converter
- Paste CSS rules: Enter one or more CSS rule blocks (selector + declarations) in the left panel. The converter parses selectors and their properties automatically.
- Review mapped classes: Each selector will show its equivalent Tailwind utility classes. Unmapped properties are listed separately so you know what needs manual handling.
- Copy or download: Use the Copy button to grab the output to your clipboard, or Download to save a text file with the full conversion mapping.
Frequently Asked Questions
What CSS properties does this converter support?
This converter supports a comprehensive set of CSS properties including layout (display, position, float, overflow, z-index), flexbox, grid, spacing (margin and padding with all variants), typography (font-size, font-weight, text-align, color, line-height), backgrounds, borders, box-shadow, opacity, sizing (width, height, min/max variants), transforms, transitions, and more.
How accurate is the CSS-to-Tailwind conversion?
The converter maps standard CSS property-value pairs to their exact Tailwind CSS utility class equivalents using a comprehensive lookup engine. Properties that use Tailwind's default scale values (e.g. padding: 1rem maps to p-4) are matched precisely. Arbitrary or non-standard values are flagged as unmapped so you can handle them manually with Tailwind's bracket notation.
Does this tool handle responsive or pseudo-class selectors?
The converter focuses on translating raw CSS declarations to their Tailwind class equivalents. Responsive breakpoints and pseudo-class selectors like :hover or :focus are parsed and displayed alongside the selector name, but the utility class output represents the base mapping. You can prepend Tailwind responsive prefixes (sm:, md:, lg:) or state prefixes (hover:, focus:) manually.
Is my CSS code sent to a server?
No. The entire conversion engine runs 100% client-side in your browser using JavaScript. No CSS code, class names, or any data ever leaves your machine, making it completely safe for proprietary stylesheets and production codebases.
Why are some properties marked as unmapped?
Not every CSS property has a direct one-to-one Tailwind utility class. Properties with non-standard values, custom calculations, or CSS features not covered by Tailwind's default configuration will appear in the unmapped section. You can use Tailwind's arbitrary value syntax (e.g. w-[calc(100%-2rem)]) or extend your tailwind.config.js to handle these.
How do I migrate a full project from CSS to Tailwind?
Start by converting your most reused component styles using this tool to understand the Tailwind equivalents. Then install Tailwind CSS in your project, apply utility classes directly in your HTML/JSX templates, and progressively remove the old CSS rules. Tools like Tailwind's official CLI and IDE extensions (Tailwind CSS IntelliSense) can accelerate the workflow.
- Runs entirely client-side — no server requests, no data leaves your browser.
- Parses full CSS rule blocks including nested selectors and multi-value shorthand properties.
- Maps against Tailwind CSS v3.x default configuration scale values for spacing, typography, colors, and more.
- Properties without a direct Tailwind equivalent are clearly flagged as unmapped for manual review.
- Supports CSS comments, multi-line declarations, and common shorthand notations.