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@mui/system

MUI System is a set of CSS utilities to help you build custom designs more efficiently. It makes it possible to rapidly lay out custom designs.

v9.4.0, 27 Aug 2026MITESM + CommonJSTypes: BundledReactUI component libraries
$ npm install @mui/system
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Key numbers

As of 25 Sept 2026
Weekly downloads
8m
+29% over 12 months
Gzip bundle size
-
No Bundlephobia data
Dependencies
8
Direct, from package.json
Last release
28 days ago
v9.4.0
GitHub stars
99.1k
32.5k forks
Open issues / PRs
1,364 / 88
Contributors
-
Commits, last 52 weeks
1,386

Downloads

Last week 2026-09-15 to 2026-09-21
05m10m15mSept 2025Mar 2026Sept 2026High 11.2m (21 Jul 2026)Low 3.6m (23 Dec 2025)
Weekly npm downloads, one point per week, weeks starting 23 Sept 2025 to 15 Sept 2026. The y axis starts at zero.

7,952,182 downloads last week, 35,252,502 in the last month. The 12-month change of +29% compares the average of the last 4 weeks with the first 4 weeks of the series.

Maintenance

Releases, last 12 months
16188 in total
Latest version
9.4.0, 27 Aug 202628 days ago
First published
2 Sept 2021
Last push to GitHub
25 Sept 2026same day as the snapshot
Repository archived
No
Open issues
1,364
Open pull requests
88
Commits, last 52 weeks
1,386
Dependents on npm
994

Major versions

  1. v9 first release 9.0.0, 7 Apr 2026
  2. v7 first release 7.0.0, 26 Mar 2025
  3. v6 first release 6.0.0, 27 Aug 2024
  4. v5 first release 5.0.0, 16 Sept 2021

Recent releases

VersionPublished
9.4.027 Aug 2026
9.3.05 Aug 2026
9.2.03 Jul 2026
9.1.223 Jun 2026
9.1.111 Jun 2026
9.1.08 Jun 2026
9.0.17 May 2026
7.3.117 May 2026
7.3.108 Apr 2026
9.0.07 Apr 2026
7.3.95 Mar 2026
7.3.812 Feb 2026
7.3.78 Jan 2026
7.3.63 Dec 2025

Compatibility

Module format
ESM + CommonJSFrom package.json type, main and exports fields
TypeScript types
Bundled
Node.js engine range
>=14.0.0
Runtimes
-
Unpacked size (npm)
673 kB
Dependencies (8)
clsxcsstype@mui/types@mui/utilsprop-types@babel/runtime@mui/styled-engine@mui/private-theming
Peer dependencies (4)
react@types/react@emotion/react@emotion/styled

Install

npm install @mui/system

CDN

jsDelivr: 1.9m requests in 30 days
  • jsDelivrhttps://cdn.jsdelivr.net/npm/@mui/system@9.4.0/
  • unpkghttps://unpkg.com/@mui/system@9.4.0/
  • esm.shhttps://esm.sh/@mui/system@9.4.0
Sources: npm registry, npm downloads API, GitHub API, jsDelivr. Data fetched 25 Sept 2026.

Indexability: Indexed.