SASS to CSS
Turn indentation-based SASS into plain CSS with a fast, offline syntactic converter.
Example
Indented SASS input:
nav
ul
margin: 0
li
display: inline-block
a
&:hover
color: #0a84ff
CSS output:
nav ul {
margin: 0;
}
nav ul li {
display: inline-block;
}
nav a:hover {
color: #0a84ff;
}How it works
Paste indented SASS and the tool reconstructs braces, semicolons, and flattens nested selectors into CSS. It is a syntactic transform, so variables, mixins, and functions are not evaluated.
Good to know
SASS to CSS converts the original indentation-based SASS syntax into plain, brace-and-semicolon CSS directly in your browser. It reconstructs the curly braces and semicolons that indented SASS omits, flattens nested selectors into full descendant selectors, resolves & parent references (so &:hover becomes a:hover), and strips // line comments. It is built for front-end developers, students, and anyone inheriting an old .sass file who needs readable CSS without installing Node, Dart Sass, or any build tooling.
Reach for this when you want to read or salvage indented SASS quickly, paste a snippet into a CodePen or a vanilla CSS project, or check how nesting expands into flat selectors before committing to a refactor. Because everything runs client-side and offline once the page loads, it is also handy when you cannot or do not want to send proprietary stylesheet code to a remote service.
Read the output as a structural translation, not a compiled result. Each indented selector becomes a full rule with the inherited parent prefix, and the status message tells you whether the conversion was clean or whether dynamic features were detected. If your input contains $variables, @mixin, @include, @function, or control directives like @if and @each, those lines are not computed: directives become passed-through comments and the tool flags that values were left as-is.
A practical caveat: this is a syntactic transformer, so always verify the output before shipping it. @import, @use, and @forward are preserved as raw statements rather than inlined, and any line relying on Sass math or variable interpolation will not produce a final value. For a true build with evaluated variables and mixins, run Dart Sass; use this tool for fast reading, prototyping, and one-off cleanups.
Frequently asked questions
Does this evaluate SASS variables, mixins, and functions?
No. There is no SASS/SCSS compiler that runs purely in the browser, so this tool only performs a syntactic transform: it adds braces and semicolons, flattens nested selectors, resolves & references, and strips // comments. Lines using $variables, @mixin, @include, @function, or math are passed through or flagged, not computed.
What is the difference between SASS and SCSS for this tool?
This tool targets the original indentation-based SASS syntax (no braces or semicolons). SCSS already uses CSS-like braces, so it does not need this converter. For SCSS you would use a formatter or a real Sass compiler instead.
Is my data uploaded anywhere?
No — this tool runs entirely in your browser. Your input never leaves your device and it works offline once loaded.
Is it free?
Yes, completely free with no sign-up and no limits.
People also ask
How do I convert a .sass file to .css?
Open the .sass file, copy its indented contents into the input box, and click Convert to get plain CSS in the output pane. You can then copy the result and save it with a .css extension; note that variables and mixins are not evaluated, so review the output first.
Does indented SASS need semicolons and braces?
No. The original SASS syntax uses indentation to define nesting and line breaks to end declarations, so it omits braces and semicolons entirely. This converter adds them back to produce valid CSS.
What happens to nested selectors when SASS is converted to CSS?
Nested selectors are flattened into full descendant selectors, so a child indented under a parent becomes 'parent child' in the output. An ampersand reference like '&:hover' attaches directly to the parent, producing 'parent:hover'.
Why are my SASS variables not being replaced with values?
There is no Sass compiler running in the browser, so the tool only rewrites syntax and cannot resolve $variable values, mixins, or functions. Lines using those features are passed through or flagged, and you would need Dart Sass to compute final values.
Is SASS still used in 2026?
SASS/SCSS remains widely used, though SCSS (the brace-based syntax) is far more common than the original indented syntax. Many projects also now use plain CSS with native nesting and custom properties, which cover features that once required Sass.
Can I convert CSS back to SASS?
This particular tool only goes from indented SASS to CSS. Converting CSS into indented SASS would require a separate tool that strips braces and semicolons and re-indents the rules; some related converters on the site handle other format pairs.
Will converting SASS to CSS change how my styles look?
A correct syntactic conversion preserves the same selectors and declarations, so static styles render identically. Differences only appear if your source relied on uncomputed features like variables, mixins, or math that this tool does not evaluate.
Is it safe to paste proprietary stylesheet code into this tool?
The conversion runs entirely in your browser and the input never leaves your device, and it works offline once the page has loaded. No stylesheet content is uploaded to a server.
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