Microsoft uses Segoe UI across its products and the corporate website. Segoe is the typeface family behind Windows, Office, Microsoft 365, and the Microsoft logo.
Quick answer
Microsoft uses Segoe UI across its products and the corporate website. Segoe is the typeface family behind Windows, Office, Microsoft 365, and the Microsoft logo.
Segoe UI
Custom / proprietary
A humanist sans-serif licensed exclusively to Microsoft. The Segoe family has grown to cover display, body, mono, script, and emoji variants, all unified by the same skeleton.
Designer
Steve Matteson (Monotype) for Microsoft
Released
2004
Where Microsoft uses it
Brand · Product UI · Body copy · Headlines · Logo
License
Licensed for use within Microsoft products and on devices running Microsoft software. Not licensed for third-party web embedding.
Free or accessible alternatives
Selawik (Microsoft's metric-compatible open clone)InterSource Sans 3
Background
Microsoft also ships Selawik — a free, metric-compatible open-source alternative — for developers who want Segoe-compatible layouts in apps that ship outside Microsoft platforms.
Get Font Info inspected the homepage of microsoft.com and parsed 11 stylesheets totalling 563.8 KB. Inside those stylesheets we found 32 @font-face declarations — the rules a browser uses to download and register a custom typeface. The primary typefaces are served from mixed, and 59 CSS rules reference them across the page.
Check the font on a specific element
Open the live inspector and hover any text on microsoft.com to see the exact font, weight, size and line-height for that element.
Segoe UI was designed by Steve Matteson (Monotype) for Microsoft, released in 2004. A humanist sans-serif licensed exclusively to Microsoft. The Segoe family has grown to cover display, body, mono, script, and emoji variants, all unified by the same skeleton.
Can I download Segoe UI?
No. Segoe UI is proprietary to Microsoft and isn't available for public licensing. The closest free or commercial alternatives are Selawik (Microsoft's metric-compatible open clone), Inter, Source Sans 3.
What are free alternatives to Segoe UI?
If you want a similar look without Segoe UI, try Selawik (Microsoft's metric-compatible open clone), Inter, Source Sans 3. Selawik (Microsoft's metric-compatible open clone) in particular is widely available and free on Google Fonts or under an open-source license.
What font does microsoft.com use?
microsoft.com uses Aux Mono, Aux Mono Fallback and Latest as its primary typefaces. These fonts are loaded from a self-hosted webfont and an unknown source and applied across 59 CSS rules on the homepage.
Where does microsoft.com load its fonts from?
microsoft.com loads its fonts from a self-hosted webfont and an unknown source. Get Font Info detected 32 @font-face declarations across 11 stylesheets on the live page.
What weights of Aux Mono does microsoft.com use?
microsoft.com loads Aux Mono in 6 weights: 100, 200, 300 700, 400, 600, 700. If you want to match the look, request the same weights from your font host so you only ship what's actually used.
Can I use the same font as microsoft.com on my website?
Yes — once you know the font name, you can load it from the same source. If Aux Mono isn't a fit (licensing, weight selection, look-and-feel), close alternatives include JetBrains Mono, IBM Plex Mono and Fira Code. Use the CSS snippet on this page as a starting point.
Is the font on microsoft.com free to use?
These fonts are self-hosted webfonts. They may be licensed commercially from a type foundry, custom-made for the brand, or freely available — you would need to identify the typeface and check its license at the foundry.
See fonts used by other sites
Compare the typography on microsoft.com with how other well-known sites load and use their fonts.
This page lists the fonts loaded by the homepage of microsoft.com. Get Font Info reads the live CSS — every @font-face rule, every font-family declaration — so you see the exact fonts the browser used, not an image-based guess.