What Font Does ChatGPT Use?
If you’ve ever used ChatGPT and admired its clean, easy-to-read text, you might have wondered: What font does ChatGPT use? The answer is surprisingly simple, but it also depends on where you’re using it.
The Default ChatGPT Font
On the official ChatGPT web app, the primary interface text uses a system UI font — meaning it adapts to the default sans-serif typeface of your operating system and browser. This ensures the text looks native to your device.
Here’s how it breaks down:
- Windows users → Segoe UI
- macOS users → San Francisco
- Linux users → Usually Ubuntu or another system default
- Mobile devices → The default OS font (e.g., San Francisco on iOS, Roboto on Android)
So there’s no single “special” ChatGPT font — it changes depending on your device.

Font in Code Blocks
If you’ve noticed the font inside ChatGPT’s code snippets, that’s different. The platform uses a monospaced font for code formatting to improve readability. Commonly, this will be:
- Courier New
- Consolas
- Menlo
- Or another default monospace font from your OS
Why ChatGPT Uses System Fonts
Using the system font instead of a custom one has benefits:
- Faster loading – No extra font files to download.
- Consistent look – Matches other apps on your device.
- Better accessibility – Optimized for clarity on your screen.
Does the Font Affect How ChatGPT Works?
Not at all. The font is purely for display and doesn’t change how the AI processes or generates text. You could copy ChatGPT’s response into a document and change the font entirely without affecting the meaning.
Can You Change the Font in ChatGPT?
Currently, the official ChatGPT interface doesn’t have a built-in font customization feature. However, you can:
- Use browser extensions or custom CSS to change the font.
- Copy responses into a text editor or word processor and apply your preferred style.
Quick Answer
What font does ChatGPT use?
- It uses your device’s default system UI font for normal text.
- It uses a monospace font (like Consolas or Courier New) for code.