The SF Compact font is the system font on Apple Watch. There are two variants of this font: SF Compact Text and SF Compact Display. When you specify the system font for text in labels and other system interface elements, Apple Watch automatically applies the most appropriate version of the font based on the point size. It also switches fonts automatically as needed.

Choose the correct font variant to use in mockups of your app. Choose SF Compact Text for labels whose text is 19 points or smaller. Choose SF Compact Display for labels whose text is 20 points or larger. These point sizes are for mockup images whose resolution is 144 pixels per inch.

Use no more than one additional typeface in your app. Custom typefaces are supported, but using too many can make the interface feel disorderly, and you may need to use a larger point size to ensure legibility. You must also implement support for features like Dynamic Type yourself.

Size fonts to be legible. Users often view content while walking or running. Adjust the size of text to ensure its legibility when the user is moving.

Emphasize the most important information. Use font weight, size, and color to highlight the most important information.

Avoid using thin weights at small sizes. The system font specifically omits the ultra light and thin weights below 20 points because they are not legible at small sizes. You should similarly avoid thin weights for custom fonts in similar situations.

Download the San Francisco fonts in Resources.

watchOS uses San Francisco as the system font for Latin, Greek and Cyrillic alphabets, and a variety of other typefaces for other scripts.

Built-In Type Styles

The built-in type styles let you express your content in ways that are visually distinct and that also take advantage of key typographic features, such as Dynamic Type.

Use the built-in styles for their intended purposes.

Style Usage
Headline Use for titles and critical information that needs to capture the user’s attention.
Body Use for longer blocks of text. Use this style for the bulk of your content.
Caption 1 Use for short form text that does not span several lines.
Caption 2 Use for short form text that is secondary to Caption 1 text.
Footnote Use for secondary content that you do not want to distract from the main content.

Use the built-in text styles as much as possible. The built-in styles support Dynamic Type, which automatically adjusts tracking and leading for every font size. The styles are all based on the system font and take advantage of other typographic features at appropriate times. For details about the tracking adjustments, see Font Tracking.

Dynamic Type

Both variants of the SF Compact typeface were designed to be highly legible, even at very small sizes. Dynamic Type provides additional flexibility by letting readers choose their preferred text size.

Download a dynamic type size table in Resources.

Font Tracking

Use SF Compact Text for sizes below 20pt (@2x / 144 ppi). Use SF Compact Display for sizes 20pt or greater. Interpolate tracking values for font sizes between the listed values.

SF Compact Text

Point size @2x(144 ppi) Point size (72 ppi) Tracking
5.5 pt 11 pt 110
6 pt 12 pt 50
7 pt 14 pt 30
10 pt 20 pt 30
11 pt 22 pt 24
12 pt 24 pt 20
13 pt 26 pt 17
14 pt 28 pt 14
15 pt 30 pt 4
16 pt 32 pt 0
17 pt 34 pt -4
18 pt 36 pt -8

SF Compact Display

Point size @2x(144 ppi) Point size (72 ppi) Tracking
20.0 pt 40 pt 0
25 pt 50 pt -10
44 pt 88 pt -20
77 pt and up 154 pt and up -25