# Fira Sans font

> A sans serif made for Mozilla's FirefoxOS, tuned for legibility across phone screens of varying quality.

Fira Sans is a sans serif typeface created for Mozilla's FirefoxOS in a project led by the Berlin foundry Carrois. Fira Sans has nine weights from Thin to Black with italics, 18 static styles, and 2,677 glyphs covering Latin, Cyrillic, Greek and Vietnamese. It is released under the SIL Open Font License 1.1 and suits interfaces, documentation and body text.

## Facts

- Classification: [Sans Serif](https://trendhub.net/fonts/category/sans-serif)
- Designed by: Carrois Apostrophe
- License: SIL Open Font License 1.1 (https://openfontlicense.org/open-font-license-official-text/)
- Styles: 18 (Thin 100, ExtraLight 200, Light 300, Regular 400, Medium 500, SemiBold 600, Bold 700, ExtraBold 800, Black 900; with italics)
- Variable font: No
- Glyphs: 2677
- Character sets: cyrillic, cyrillic-ext, greek, greek-ext, latin, latin-ext, vietnamese
- Last updated: 2025-09-11
- Official source: https://fonts.google.com/specimen/Fira+Sans
- Page: https://trendhub.net/fonts/fira-sans
- Tagged for: Body text, Interfaces, Branding, Tech

## About Fira Sans

Fira Sans is a sans serif family designed to match the character of Mozilla's FirefoxOS and to remain legible on a wide range of handsets with differing screen quality and rendering. The specimen shows a tall lowercase, open apertures in a, c, e and s, a slight angle on some stroke endings and sturdy joins that stay clear in the Black weight. The family has nine weights, Thin 100 to Black 900, each with an italic, for 18 styles supplied as static files; it is not a variable font. Each font holds 2,677 glyphs covering Latin, Latin Extended, Cyrillic, Greek and Vietnamese. According to the official notes, Fira comes in three widths, all with italics, plus a monospaced variant. Carrois, a Berlin type foundry, leads the project; the copyright belongs to The Mozilla Foundation and Telefonica S.A.

## License

SIL Open Font License 1.1. Copyright (c) 2012-2015, The Mozilla Foundation and Telefonica S.A.

Allowed:
- Use the fonts in personal and commercial work, in print, on the web and in apps.
- Modify the fonts and build new versions from them.
- Redistribute the fonts, on their own or bundled with software, as long as the license text and copyright notice go with them.

Conditions:
- The fonts cannot be sold by themselves.
- A modified version must stay under the same license and cannot use a Reserved Font Name without the copyright holder's permission.
- The authors' names cannot be used to promote a modified version without permission.

Summary only, not legal advice. Full text: https://openfontlicense.org/open-font-license-official-text/

## Where it works

- **Phone and tablet interfaces**: Legibility on screens of varying quality was the stated design goal.
- **Technical documentation**: Italics for all nine weights handle emphasis, and the related monospaced variant can set the code.
- **Multilingual products**: One family covers Latin, Cyrillic, Greek and Vietnamese with the same weight range.
- **Body text on websites**: Regular and Medium have open letter shapes that keep paragraphs clear at ordinary text sizes.
- **Brand systems**: Thin to Black plus condensed sister families give a full hierarchy from one design.

## Things to know

- **Static fonts only**: The package contains 18 separate TTF files and no variable font.
- **Condensed widths are separate families**: Narrower versions are published under their own family names rather than as an axis.
- **Four scripts in every file**: Each of the 18 fonts carries the full set of 2,677 glyphs: Latin, Cyrillic, Greek and Vietnamese.

## FAQs

### Is Fira Sans free for commercial use?

Yes, under the SIL Open Font License 1.1. Fira Sans may be used, altered and passed on in personal and commercial work, but the font files cannot be sold on their own and derivative fonts remain under the same license. Read the license text for the exact terms.

### Who designed Fira Sans?

Fira Sans is credited to Carrois Apostrophe, and Carrois, a Berlin type foundry, leads the project. The font's name table lists Carrois Corporate and Edenspiekermann AG; the copyright is held by The Mozilla Foundation and Telefonica S.A.

### How many weights does Fira Sans have?

Fira Sans has nine weights, Thin to Black, each with an italic, which makes 18 styles.

### Is Fira Sans a variable font?

No. Fira Sans is not a variable font; each weight and italic is a separate static file.

### Which languages does Fira Sans support?

Fira Sans includes the letters needed for English and other Latin-script languages such as French, German, Polish, Turkish and Vietnamese, as well as Russian, Ukrainian, Bulgarian and Greek.

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Source: https://trendhub.net/fonts/fira-sans (trendhub)