🎨CSS Variables Generator

Generate CSS custom properties for your design system.

🆓 Free🔒 Secure⚡ Instant📱 Mobile-friendly🚫 No signup

Generate CSS custom properties online for free. Create design tokens with --variable syntax.

CSS

:root {
  --primary: #3B82F6;
  --secondary: #6366F1;
  --accent: #F59E0B;
  --text: #111827;
  --bg: #FFFFFF;
  --font-size-base: 16px;
  --radius: 8px;
  --spacing: 16px;
}

How to Use CSS Variables Generator — Step by Step

1Enter your design tokens — colors, font sizes, spacing, and border radii
2Click 'Generate CSS Variables' — values are formatted as :root { --variable-name: value; }
3Variable names follow a consistent naming convention
4Copy and paste into your global CSS file

Frequently Asked Questions

Is this tool completely free?

Yes. All ToolNest tools are 100% free with no signup required, no account, and no watermarks added to output files.

Are my uploaded files secure and private?

All uploads use HTTPS encryption during transfer. Files are processed on secure isolated servers and automatically deleted within 2 hours of upload.

Does this tool work on mobile phones?

Yes. ToolNest works on any modern browser on iPhone, Android, tablet, or desktop — no app download or plugin needed.

Do I need to create an account?

No. Just open the tool, upload your file, and download the result. No email, no signup, no password.