The Two Main Capitalization Styles
When writing headings, article titles, and UI labels, two styles dominate: Sentence case and Title Case.
- Sentence case: Only the first word and proper nouns are capitalized
- Example: How to convert text to sentence case
- Title Case: Most words are capitalized (excluding short prepositions, articles, conjunctions)
- Example: How to Convert Text to Sentence Case
Key Differences
| Feature | Sentence case | Title Case |
|---|
|---|---|---|
| Capitalized words | First word + proper nouns | Most words |
|---|---|---|
| Formality | Informal, modern | Formal, traditional |
| Common in | Tech products, blogs | News, academia, print |
| Readability | High (natural) | Moderate (more visual weight) |
Where Each Style is Preferred
Sentence case is preferred for:
- Modern web apps — Google, Notion, Linear, Figma use sentence case in their UI
- Blog posts on tech sites — Medium, Dev.to, GitHub blogs
- Chat messages and notifications
- Button labels in SaaS products
- Error messages and tooltips
Title Case is preferred for:
- News headlines — The New York Times, AP style
- Book and movie titles
- Academic paper titles (varies by journal)
- Traditional publications
- Navigation menus in many websites
What Major Style Guides Say
| Style Guide | Default |
|---|
|---|---|
| AP Style | Title Case for headlines |
|---|---|
| Chicago Manual of Style | Title Case for headlines |
| APA | Sentence case for article titles |
| Google Material Design | Sentence case for UI labels |
| Microsoft Writing Style | Sentence case for UI |
The Modern Trend
The tech industry has shifted toward sentence case for UI components because:
1. It's more conversational and approachable
2. It requires fewer decisions (no need to remember which words to capitalize)
3. It scales better internationally (some languages don't capitalize nouns the same way)
Quick Decision Guide
If you're writing **UI copy or blog content for a tech product** → use Sentence case
If you're writing **headlines for a news publication or traditional media** → use Title Case
If you're writing **book titles, movie names, or academic papers** → use Title Case