# Roboto Flex font

> A variable sans in one file with 13 axes, from weight, width and optical size to parametric stroke and height controls.

Roboto Flex is a variable sans serif that Google commissioned from Font Bureau as an extended version of Roboto. Roboto Flex has 13 axes in one file, including weight from 100 to 1000, width from 25 to 151 and optical size from 8 to 144. Roboto Flex is released under the SIL Open Font License 1.1 and suits responsive interfaces.

## Facts

- Classification: [Sans Serif](https://trendhub.net/fonts/category/sans-serif)
- Designed by: Font Bureau, David Berlow, Santiago Orozco, Irene Vlachou, Ilya Ruderman, Yury Ostromentsky, Mikhail Strukov
- License: SIL Open Font License 1.1 (https://openfontlicense.org/open-font-license-official-text/)
- Styles: 20 (Thin 100, ExtraLight 200, Light 300, Regular 400, Medium 500, SemiBold 600, Bold 700, ExtraBold 800, Black 900, ExtraBlack 1000)
- Variable font: Yes (opsz 8–144, wght 100–1000, GRAD -200–150, wdth 25–151, slnt -10–0, XOPQ 27–175, YOPQ 25–135, XTRA 323–603, YTUC 528–760, YTLC 416–570, YTAS 649–854, YTDE -305–-98, YTFI 560–788)
- Glyphs: 896
- Character sets: cyrillic, cyrillic-ext, greek, latin, latin-ext, vietnamese
- Last updated: 2025-09-05
- Official source: https://fonts.google.com/specimen/Roboto+Flex
- Page: https://trendhub.net/fonts/roboto-flex
- Tagged for: Headlines, Interfaces, Tech

## About Roboto Flex

Roboto Flex is a sans serif that takes the Roboto design and widens it into a variable font with 13 axes. Five are the familiar ones: weight from 100 to 1000, width from 25 to 151, optical size from 8 to 144, grade from -200 to 150 and slant from 0 to -10. The other eight are parametric axes that control details such as stroke thickness (XOPQ, YOPQ), counter width (XTRA) and the heights of capitals, lowercase, ascenders, descenders and figures. According to the official notes, Google commissioned Font Bureau to rework Roboto with large screens in mind, and Cyrillic and Greek were developed with script specialists. Everything ships in one upright file of 896 glyphs covering Latin, Cyrillic, Greek and Vietnamese sets. The credits include Font Bureau and David Berlow among seven names. Roboto Flex is published under the SIL Open Font License 1.1.

## License

SIL Open Font License 1.1. Copyright 2017 The Roboto Flex Project Authors (https://github.com/TypeNetwork/Roboto-Flex)

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

- **Responsive layouts**: Width from 25 to 151 lets a heading narrow on a phone and widen on a large display without swapping fonts.
- **Dark mode text**: The grade axis, from -200 to 150, makes strokes lighter or heavier for a dark or light background while the font stays the same.
- **Very large and very small type**: Optical size from 8 to 144 adapts the drawing for footnotes at one end and wall-size titles at the other.
- **Expressive web headlines**: Weight reaches 1000 and width 151, a range that allows animated or extreme display settings from one file.
- **Fine typographic tuning**: Parametric axes such as XTRA and YTLC adjust counters and lowercase height, for example to even out justified text.

## Things to know

- **One file, no separate italic**: Slanted text comes from the slant axis, which runs from 0 to -10, not from a second file.
- **Twenty named instances**: The font names ten weights, Thin 100 to ExtraBlack 1000, each with a slanted italic instance; widths and the other settings are reached through the axes.
- **Parametric axes use capital tags**: XOPQ, YOPQ, XTRA, YTUC, YTLC, YTAS, YTDE and YTFI are set with font-variation-settings.
- **Weight goes past 900**: The weight axis ends at 1000, beyond the usual Black 900.

## FAQs

### Is Roboto Flex free for commercial use?

Yes. Roboto Flex is published under the SIL Open Font License 1.1, which allows use in personal and commercial work, modification and redistribution. The font cannot be sold on its own, and modified versions stay under the same license.

### Who designed Roboto Flex?

Roboto Flex was made by Font Bureau on a commission from Google. The credits list David Berlow, Santiago Orozco, Irene Vlachou, Ilya Ruderman, Yury Ostromentsky and Mikhail Strukov.

### How many axes does Roboto Flex have?

Roboto Flex has 13 variable axes: weight, width, optical size, grade, slant and eight parametric axes for stroke thickness, counter width and vertical heights.

### What is the difference between Roboto and Roboto Flex?

Roboto Flex extends the Roboto design to far wider ranges, with weight up to 1000, width from 25 to 151 and optical sizes from 8 to 144, and adds grade and parametric axes.

### Which languages does Roboto Flex support?

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

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Source: https://trendhub.net/fonts/roboto-flex (trendhub)