---
title: "Typography"
source: 18F Guides
source_url: https://github.com/18F/guides
licence: CC0-1.0
domain: engineering
subdomain: 18f-guides
date_added: 2026-04-25
---

The primary font is **Helvetica Neue**, in bold and regular weights.
We use one typeface to keep things simple, and use different font sizes and weights to create hierarchy.

Helvetica Neue is a system font on all Apple devices, so you don't need to download or install anything. On Windows devices, if Helvetica Neue is not available, use Arial as a replacement.


  
    <h2 class="font-sans-md">Helvetica Neue, Regular</h2>
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    <h2 class="font-sans-md">Helvetica Neue, Bold</h2>
     Aa 
    

      A B C D E F G H I J K L M 

      N O P Q R S T U V W X Y Z 

      a b c d e f g h i j k l m 

      n o p q r s t u v w x y z 

      0 1 2 3 4 5 6 7 8 9
