Stylus to CSS Converter

Paste Stylus source and get plain CSS — variables are resolved, nested rules are flattened, and missing braces/semicolons are added.

Last updated: May 25, 2026

Stylus Input

CSS Output

.card {
  background: white;
  padding: 1rem;
  border: 1px solid #0f766e;
}
.card .title {
  color: #0f766e;
  font-size: 1.25rem;
}
.card:hover {
  background: #0f766e;
  color: white;
}
.hero {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: #0f766e;
}

Converts Stylus to plain CSS. Adds colons, semicolons, and braces, resolves variable assignments (name = value), and flattens nested selectors. Stylus mixin definitions and calls are inlined where possible.

Client-Side Processing

Input Data Stays on Device

Instant Local Execution

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What is Stylus to CSS Converter?

Stylus is a CSS preprocessor known for its flexible syntax. Colons, semicolons, and braces are all optional, and variables are declared with simple `name = value` assignments. Like SASS and SCSS, Stylus supports nested selectors, parent references (`&`), and parametric mixins.

This converter normalises Stylus into SCSS-style source (adding colons, semicolons, and braces, and rewriting variable assignments as `$name: value;`) and then runs the SCSS-to-CSS pass. The end result is plain CSS with variables substituted, nested selectors flattened, and basic mixin bodies inlined.

It is well suited for migrating a Stylus snippet to plain CSS, inspecting how nesting will collapse, or pasting a Stylus example into a CSS-only project. As with the other preprocessor-to-CSS converters here, complex Stylus features (control flow, advanced functions, transparent mixins) are not evaluated and should be rewritten manually.

How to Use Stylus to CSS Converter

Paste Stylus code into the input panel.

The CSS output appears instantly on the right.

Confirm that nested rules and variable substitutions look correct.

Copy the CSS or download it as a .css file.

Manually rework any Stylus-only features (conditionals, loops, built-in functions).

Common Use Cases

Migrate a Stylus partial to plain CSS for a static page or CMS theme.
Inspect how Stylus indentation and nesting collapse into descendant rules.
Strip Stylus variables and mixins from a snippet before pasting into a CSS-only project.
Compare equivalent CSS output between Stylus, SCSS, and SASS.
Convert a Stylus example from documentation without installing the Stylus CLI.

Example Input and Output

Compile Stylus with variables and nesting into CSS.

Stylus input

primary = #0f766e
.card
  color primary
  .title
    font-weight 600
  &:hover
    color white

CSS output

.card {
  color: #0f766e;
}
.card .title {
  font-weight: 600;
}
.card:hover {
  color: white;
}

Privacy

All conversion happens locally in your browser. No Stylus or CSS is transmitted to any server.

Stylus features that need a real compiler

Use the official Stylus CLI when you rely on control-flow features, transparent mixins, the built-in math/colour helpers, or @block-style assignments.

Frequently Asked Questions

Is this a full Stylus compiler?

No. It handles variables, nesting, parent references, and simple mixins. Control flow, advanced built-in functions, and dynamic mixins are not evaluated.

Does it support optional braces and colons?

Yes. The converter detects whether your Stylus uses braces or indentation and normalises the syntax before producing CSS.

How are bare identifiers handled?

Identifiers that match an earlier `name = value` assignment are treated as variable references and substituted in the output. Other identifiers are left as-is.

Does my Stylus get uploaded?

No. Conversion runs entirely in your browser — nothing is sent to a server.

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