Free SASS to Stylus Converter - Convert SASS/SCSS to Stylus

Quickly convert SASS or SCSS code to the expressive Stylus syntax online for free – a fast, accurate, and seamless migration tool.

Input SASS

Stylus Output

The landscape of frontend development is rich with powerful tools designed to make writing CSS more efficient and enjoyable. Among the most influential of these are the CSS preprocessors: SASS, LESS, and Stylus. While each offers a suite of features to supercharge your stylesheets, they are not interchangeable. A SASS to Stylus Converter is a highly specialized utility built to translate code from the widely-used SASS/SCSS syntax into the flexible and minimalist Stylus syntax.

This tool is a critical bridge for developers who need to migrate projects, integrate libraries from different ecosystems, or simply prefer the expressive power of Stylus. It intelligently parses SASS code—with its rigid syntax of dollar-sign variables, @mixin directives, and mandatory braces—and rewrites it into the elegant and versatile syntax of Stylus. This automated process saves developers from the monumental task of manual translation, which is both time-consuming and fraught with potential errors.

What is a SASS to Stylus Converter?

A SASS to Stylus Converter is a utility that automates the conversion of stylesheet code from SASS (Syntactically Awesome StyleSheets) to Stylus. It handles both of SASS’s syntaxes: the modern SCSS format and the original indented SASS format.

SASS/SCSS: A feature-rich and robust preprocessor that has become an industry standard. It uses a CSS-like syntax (in its SCSS variant) with $ for variables, @mixin/@include for reusable code blocks, and strict use of curly braces and semicolons.
Stylus: A highly flexible and expressive preprocessor known for its minimalist and “Pythonic” syntax. It gives developers complete freedom, making braces, colons, and semicolons optional. This results in incredibly clean and readable code for those who master it.

A SASS to Stylus Converter acts as a sophisticated translator. It understands the grammatical rules of SASS and meticulously converts every feature into its correct Stylus equivalent. This function is vital for modern digital workflows, especially when a team or individual developer wants to leverage the vast ecosystem of SASS libraries and frameworks within a project that uses Stylus.

Real-Life Scenarios and Technical Use Cases:

Adopting a Preferred Syntax: A frontend developer joins a new team that uses Stylus for all its projects. The developer has a personal library of useful SASS mixins and components built over several years. Using a SASS to Stylus Converter, they can quickly convert their entire library to Stylus and integrate it into the team’s workflow.
Project Migration: A team decides to migrate their entire frontend stack to a more Node.js-centric environment where Stylus is a popular choice. Instead of rewriting thousands of lines of existing SASS code, they can use a converter to handle the bulk of the migration automatically.
Using SASS-based UI Frameworks: A developer is building an application with Stylus but wants to use a popular grid system or component library that is only available in SASS. They can run the library’s source files through a SASS to Stylus Converter to create a Stylus-compatible version.
Educational Purposes: For developers learning different preprocessors, a converter is an excellent tool. It allows them to write code in one syntax and see its direct equivalent in another, providing a clear and practical way to understand the differences and similarities between SASS and Stylus.

Why Use a SASS to Stylus Converter?

While a manual conversion is theoretically possible, it is practically infeasible for any reasonably sized project. An online SASS to Stylus Converter offers a fast, reliable, and convenient solution with numerous advantages.

Improves Workflow and Eliminates Tedious Work

Manually translating between SASS and Stylus is a developer’s nightmare. You would need to change every variable, rewrite every mixin and function definition, remove all braces and semicolons, and handle differences in interpolation and logic. This is an incredibly detail-oriented task where a single mistake can break everything. An automated tool eliminates this entire class of tedious, low-value work.

Works Online Without Installation

Setting up a local environment for code conversion can be cumbersome, often requiring specific versions of Node.js, npm, or other command-line tools. An online SASS to Stylus Converter is entirely browser-based. It offers a zero-friction solution for developers who need to perform a conversion quickly without disrupting their local development setup.

Optimized for Speed and Convenience

Our tool is built for immediate results. The user interface is minimalist and to the point: an input panel for your SASS/SCSS code and an output panel for the converted Stylus code. The conversion is performed instantly in your browser, allowing you to convert code snippets or entire files on the fly.

Enhances Developer Freedom and Compatibility

The biggest benefit of this tool is that it provides freedom. It breaks the lock-in of a single preprocessor ecosystem. Developers who love the clean, expressive syntax of Stylus don’t have to be excluded from using the vast number of resources available for SASS. This converter makes code truly portable, allowing you to mix and match the best tools for the job.

Boosts Productivity and Accelerates Development

By providing a bridge between the SASS and Stylus worlds, this converter is a massive productivity booster. Teams can avoid rewriting components, libraries, and frameworks from scratch. They can convert existing, battle-tested code in seconds and integrate it directly into their projects, significantly speeding up development cycles.

How to Use the SASS to Stylus Converter Tool

Our converter is designed with simplicity and ease of use as top priorities. You can transform your code in three simple steps.

Step 1 – Paste Your SASS or SCSS Code

Copy your source code from your .sass or .scss file and paste it into the left-hand input editor. The tool is designed to handle both small code snippets and large, complex files with thousands of lines.

Step 2 – Click the Convert Button

Simply click the “Convert” button. The tool’s powerful conversion engine will instantly parse the SASS/SCSS code, identifying all variables, mixins, functions, and control structures. It will then translate them into their corresponding Stylus syntax.

Step 3 – Copy the Generated Stylus Code

The clean, correctly formatted Stylus code will appear in the right-hand output panel. You can then click the “Copy” button to grab the new code and paste it into your project’s .styl file, ready to be used.

Features of Our SASS to Stylus Converter Tool

Our tool is designed to be a powerful and reliable utility for every developer.

100% Free and Web-Based: Our converter is completely free to use, with no hidden fees, subscriptions, or usage limits.
No Registration or Login Needed: You can start converting code the moment you open the page, without the need to create an account or provide any personal information.
Instant and Accurate Translation: The conversion engine is highly accurate, correctly handling the syntactic and functional differences between SASS and Stylus.
Works on All Devices: With a fully responsive design, the tool works seamlessly on desktops, tablets, and smartphones, so you can convert code wherever you are.
Privacy-Focused: We take your data security seriously. All conversions happen client-side in your browser. Your code is never uploaded to our servers, ensuring it remains completely private.

Who Can Benefit from a SASS to Stylus Converter?

This converter is a niche but essential tool for a specific group of web professionals who value flexibility and efficiency.

Frontend Developers: The primary audience, especially developers who prefer the syntax of Stylus but need to work with SASS-based projects or libraries.
Node.js Developers: Stylus has a strong following in the Node.js community, and this tool allows Node.js developers to easily pull in SASS resources.
Syntax Purists and Minimalists: Developers who are passionate about writing clean, minimalist code are often drawn to Stylus. This tool empowers them to use their preferred syntax without compromise.
Students and Educators: An invaluable resource for teaching the nuances of different CSS preprocessors and for comparing their strengths and philosophies.

SASS vs. Stylus – Comparison Table

SASS and Stylus are two of the most powerful CSS preprocessors, but they approach their task with very different philosophies.

Feature	SASS (SCSS Syntax)	Stylus
Syntactic Flexibility	Strict. Requires curly braces `{}` and semicolons `;`.	Extremely flexible. Braces, colons `:`, and semicolons `;` are all optional.
Variable Definition	Uses the dollar sign (`$`): `$primary-color: #333;`	No special character required (but `$` is allowed for clarity): `primary-color = #333`
Mixin Definition	Uses `@mixin` and `@include` directives: `@mixin border-radius($r) { ... }`	Defined like a function, called directly: `border-radius(r) { ... }` `border-radius(5px)`
Function Definition	Uses the `@function` directive: `@function double($n) { @return $n * 2; }`	Defined like a mixin, can return a value: `double(n) { n * 2 }`
Interpolation	Uses `#{...}`: `.#{$class-name} { ... }`	Uses `{...}`: `.{class-name} { ... }`
Ecosystem	Larger ecosystem with more established frameworks and libraries (e.g., Bootstrap, Foundation).	Smaller but very passionate community, especially popular within the Node.js ecosystem.

A Developer’s Guide to Translation: How SASS Features Map to Stylus

A robust SASS to Stylus Converter handles many complex transformations. Here’s a look at how key features are mapped:

Variables: The dollar sign is dropped. $font-size: 16px; becomes font-size = 16px.
Nesting: The syntax is similar, but the converter removes the braces.
Mixins: SASS @mixin and @include are converted into a simple Stylus block definition and call.
- SASS: @mixin large-text { font-size: 20px; } .header { @include large-text; }
- Stylus: large-text() { font-size: 20px; } .header { large-text(); }
Conditional Logic: SASS @if/@else directives are translated into Stylus’s clean if/else blocks.
Loops: The converter translates SASS @for and @each loops into the equivalent Stylus for loops.
- SASS: @each $color in red, green, blue { .#{$color}-bg { background-color: $color; } }
- Stylus: for color in red green blue { .{color}-bg { background-color: color } }

Tools You May Find Useful

Your development workflow involves many steps, and we have a tool for almost all of them. Explore our comprehensive suite of utilities.

Preprocessor Converters: Our CSS Tools are a one-stop shop for all your conversion needs. You can convert from Stylus to SASS, compile SASS to CSS, or use a Stylus Compiler to see the final output.
Code Formatting: Keep your code neat and consistent with our CSS Beautifier and SCSS Beautifier.
Code Optimization: Improve your website’s performance by reducing file size with our powerful CSS Minifier.
Color Management: Master your color schemes with our Color Palette Generator and convert between any format with tools like the RGB to HEX Converter.
General Web Development: Handle data with our JSON Beautifier, secure your projects with our Password Generator, or encode assets with our Image to Base64 Converter.

Frequently Asked Questions (FAQs)

Why would someone convert from SASS to Stylus?

The main reason is developer preference for Stylus’s clean, expressive, and flexible syntax. Other reasons include migrating a project to a new technology stack where Stylus is the standard, or for teams that have chosen Stylus for its strong integration with the Node.js ecosystem.

What makes Stylus so different from SASS/SCSS?

The biggest difference is syntactic flexibility. Stylus makes curly braces, colons, and semicolons optional, allowing developers to write code that looks very clean and minimal. It feels more like a programming language like Python, whereas SCSS is a strict superset of CSS.

Is the SASS to Stylus conversion always 100% accurate?

For the vast majority of SASS and SCSS code, the conversion is highly accurate. However, extremely complex, custom SASS functions that rely on SASS-specific internal logic might not have a direct, one-to-one equivalent in Stylus. In these rare edge cases, minor manual adjustments to the converted code might be needed.

Does the converter handle advanced SASS features like `@extend`?

Yes. The converter understands SASS’s @extend directive and translates it into the equivalent @extend functionality within Stylus, preserving the inheritance and relationships in your code.

Can I convert from both the indented SASS syntax and the SCSS syntax?

Yes. A robust SASS to Stylus Converter is designed to handle both formats. You can paste code from a .sass file or a .scss file, and the tool will correctly parse it and convert it to Stylus.