About CSS to SCSS

Convert CSS to SCSS preprocessor syntax. Part of the DevTools Surf developer suite. Browse more tools in the CSS collection.

Use Cases

• Frontend teams migrating CSS to SCSS for better maintainability
• Developers adding variables and mixins to existing CSS projects
• Design system engineers converting CSS tokens to SCSS variables
• Full-stack devs adopting SCSS in a Rails or Angular project

Tips

• Check that color values are converted to SCSS $variables
• Verify nested selectors use the SCSS & parent reference correctly
• Review generated @mixin blocks for reusable pattern extraction

Fun Facts

• SCSS (Sassy CSS) was introduced in Sass 3.0 (May 2010) as a CSS-superset syntax, replacing the original indented Sass syntax.
• SCSS is the most popular CSS preprocessor, used by approximately 77% of developers who use preprocessors according to the State of CSS 2023 survey.
• The SCSS syntax was specifically designed so that every valid CSS file is also a valid SCSS file, easing migration.

FAQ

Why convert plain CSS to SCSS?

To start using SCSS features (variables, nesting, mixins) in an existing stylesheet without rewriting it. The output is a .scss file you can progressively enhance.

Does it detect patterns for refactoring?

Not automatically — it's a syntactic conversion. For refactoring suggestions, run the result through a SCSS linter with variable-extraction rules.

What's the difference between SCSS and Sass indented syntax?

SCSS uses curly braces and semicolons (CSS-like); Sass uses indentation (Python-like). This tool outputs SCSS; use CSS-to-SASS for the indented variant.

Can I use the output with Dart Sass?

Yes — SCSS output is compatible with Dart Sass, node-sass (deprecated), and LibSass. Dart Sass is the actively-maintained reference implementation.