Fira Mono
monospace · Designed by Carrois Apostrophe
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Fira Mono is a clean, no-nonsense monospace typeface originally developed for Mozilla's Firefox OS. It has a technical, structured appearance with consistent letter widths, open apertures, and balanced stroke weights that make it highly legible at small sizes. The letterforms are slightly humanist compared to older coding fonts, giving it a professional but approachable quality without feeling cold or mechanical. It sits comfortably between classic terminal aesthetics and modern interface design.
Fira Mono works well as a code display font in developer documentation or technical blog posts where readability of syntax matters. It also fits naturally in UI design for dashboards, data tables, or any interface that needs to display numbers and strings in aligned columns. Beyond the screen, it can serve editorial projects that want a deliberately technical or utilitarian look, such as design-forward publications or product spec sheets where the monospace grid adds visual structure rather than just function.
Best suited for: Code display in developer documentation, technical blog posts, UI dashboards, data tables, and editorial projects requiring a deliberately technical or utilitarian visual approach.
Design considerations: Fira Mono offers three weight options (regular, 500, 700) that support hierarchy and emphasis within monospaced contexts. Its slightly humanist letterforms balance technical precision with approachability, making it suitable for both functional interfaces and design-forward editorial applications.
Pairing guidance: Pair Fira Mono with Fira Sans for cohesive technical interfaces where the sans-serif handles body text and navigation, with Space Grotesk for contemporary layouts emphasizing geometric clarity, or with Merriweather for editorial designs mixing technical content with serif-based narrative text.
Pairs well with
Fira Mono at a glance
Carrois Apostrophe
SIL Open Font License 1.1
June 2014
September 2025
3 (3 weights)
Monospace
7
Google Fonts
All 3 Fira Mono styles
| Weight | Name | Upright |
|---|---|---|
| 400 | Regular | Aa Bb Gg 123 |
| 500 | Medium | Aa Bb Gg 123 |
| 700 | Bold | Aa Bb Gg 123 |
Fira Mono character map
Which languages does Fira Mono support?
Fira Mono includes 7 character sets:
- Cyrillic: Russian, Ukrainian, Bulgarian, Serbian and other Cyrillic-script languages
- Cyrillic Extended: additional Cyrillic letters used in languages such as Kazakh, Tatar and Bashkir
- Greek: modern Greek
- Greek Extended: polytonic (ancient) Greek
- Latin: English, Spanish, French, German, Italian, Portuguese and other Western European languages
- Latin Extended: Central and Eastern European languages such as Polish, Czech, Turkish, Romanian and Hungarian
- Symbols 2: box-drawing, block and other extra symbols
Can I use Fira Mono commercially?
Yes, it's free for personal and commercial use. Fira Mono is released under the SIL Open Font License 1.1. You can use it in logos, websites, apps, videos, printed products and merchandise without paying or asking permission. The one thing you can't do is sell the font file on its own.