CSS to SCSS Converter
Paste CSS and generate cleaner SCSS with optional nesting and variable conversion for Sass migrations and stylesheet refactors.
Last updated: May 20, 2026
CSS to SCSS conversion runs locally in your browser. Your pasted CSS and generated SCSS are not uploaded.
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Buy me a coffeeWhat is CSS to SCSS Converter?
A CSS to SCSS Converter turns regular CSS into SCSS-friendly stylesheet code. SCSS is a CSS-compatible syntax for Sass, so plain CSS can usually be placed in a .scss file directly. This tool adds practical conversion steps: it formats the stylesheet, optionally nests selectors that share the same parent, and converts :root custom properties such as --brand-color into Sass variables such as $brand-color.
The converter is useful when moving a CSS file into a Sass codebase, preparing component styles for a design system, or cleaning CSS copied from a prototype. It keeps the output close to the original CSS while adding SCSS conveniences only where the conversion is predictable.
How to Use CSS to SCSS Converter
Paste CSS into the input editor.
Keep "Nest matching selectors" enabled when you want rules like .card h2 and .card:hover grouped under .card.
Keep "Convert :root variables" enabled to turn CSS custom properties into Sass variables.
Choose the indentation style that matches your project.
Review any warnings for unbalanced braces or CSS var() fallbacks.
Copy the SCSS output or download it as a .scss file.
Common Use Cases
- Migrating a legacy CSS stylesheet into an SCSS-based frontend project
- Converting component CSS into nested SCSS before moving it into a design system
- Turning :root custom properties into Sass variables for build-time styling
- Cleaning and formatting CSS copied from a browser inspector or prototype
- Preparing stylesheet examples for documentation that uses SCSS syntax
- Grouping hover, focus, and child selectors under a common parent selector
- Reviewing how much of a CSS file can be safely converted to SCSS conveniences
- Generating a quick .scss file without installing Sass locally
Example Input and Output
Converting a card component from CSS into nested SCSS with variables:
:root {
--brand-color: #2563eb;
}
.card {
color: #0f172a;
}
.card h2 {
color: var(--brand-color);
}
.card:hover {
border-color: var(--brand-color);
}$brand-color: #2563eb;
.card {
color: #0f172a;
h2 {
color: $brand-color;
}
&:hover {
border-color: $brand-color;
}
}How This Tool Works
The converter scans CSS rules, declarations, and nested at-rules, then renders SCSS source with a configurable indent. When enabled, it extracts custom properties from :root into Sass variable declarations, rewrites matching var() references, and groups selectors that share a clear class or ID base into nested SCSS blocks.
Technical Stack
Safe Nesting
The converter only nests single selectors with a clear class or ID prefix. Complex comma-separated selector lists remain flat because automatic nesting can accidentally change cascade behavior.
Variables Are Build-Time
Sass variables are resolved at build time, while CSS custom properties can change at runtime. Do not convert runtime theme variables if your app relies on updating them in the browser.
Review Before Committing
Automatic conversion is a refactor aid, not a replacement for code review. Check nesting order, variable behavior, and cascade-sensitive selectors before committing generated SCSS.