# Fonts for interfaces

Interface text is small, dense and full of numbers. These are the sans serifs people compare for apps and websites.

## What to look for

- Tabular figures make numbers line up in tables and prices.
- The 1, l and I look clearly different in labels and codes.
- The family has enough weights for a hierarchy, and one variable file with every weight is best.
- The font covers the languages your product ships in.
- The license lets you embed the font in an app.

## Katagami Sans and Katagami Round

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Katagami Sans has 6,580 characters and weights 100 to 900 in one variable file. It has tabular figures and small capitals, and it sets 22 scripts plus Chinese, Japanese and Korean. Katagami Round is the softer member with rounded vertices. Both are free under the SIL Open Font License. The [Katagami Sans](https://katagami.kevinliu.studio/katagami-sans) and [Katagami Round](https://katagami.kevinliu.studio/katagami-round) pages have the full specifications.

## Comparison

| Font | License | Weights | Variable axes | Notable features |
|---|---|---|---|---|
| Katagami Sans | SIL Open Font License 1.1 | 100 to 900 | wght | Squared curves, small capitals, tabular figures, five members |
| Inter | SIL Open Font License 1.1 | 100 to 900 | wght 100 to 900, opsz 14 to 32 | Optical sizes with Inter Display, slashed zero, tabular figures, cv01 to cv13, ss01 to ss08 |
| Geist Sans | SIL Open Font License 1.1 | 100 to 900 | wght 100 to 900 | Stylistic sets ss01 to ss11, tabular figures, fractions |
| Roboto | SIL Open Font License 1.1 | 100 to 900 | wght 100 to 900, wdth 75 to 100 | Default font on Android and ChromeOS, Material Design's typeface |
| SF Pro | Apple license: for creating mock-ups of interfaces for Apple's platforms only, by registered Apple developers; not to be embedded in other products | Ultralight to Black (9 weights) | Weight, width and optical size (axis tags not published) | System font for Apple platforms, four widths, a rounded variant, size-specific outlines |
| IBM Plex Sans | SIL Open Font License 1.1 | 100 to 700 | wght 100 to 700, wdth 75 to 100 | Condensed width, alternates for a, g and 0 |

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Source: https://katagami.kevinliu.studio/fonts-for/interfaces