Sentence case Guide

What is Sentence case?

Sentence case is a capitalization style where only the first letter of a sentence and proper nouns are capitalized. It's the standard format for most writing, including body text, descriptions, and general communication.

Basic Rules

• Capitalize: The first word of each sentence
• Capitalize: Proper nouns (names, places, brands)
• Capitalize: The pronoun "I"
• Capitalize: First word after a period, question mark, or exclamation point
• Lowercase: All other words unless they're proper nouns

Examples

When to Use Sentence case

• 📝 Body text: All paragraphs and general content
• ✉️ Emails: Professional and casual correspondence
• 📱 UI text: Button labels, descriptions, tooltips
• 📋 Lists: Bullet points and numbered items
• 🗣️ Captions: Image and video descriptions
• 📄 Documentation: Technical writing and guides

Sentence case vs Title Case

Modern UI Design Trend

Many modern user interfaces prefer sentence case over Title Case because:

• • More natural: Matches how people naturally read and write
• • Less formal: Creates a friendlier, more approachable tone
• • Faster to read: Studies show improved scan-ability
• • Easier to localize: Title case rules vary by language
• • Modern aesthetic: Aligns with contemporary design principles

Companies like Apple, Google, and Microsoft have increasingly adopted sentence case in their interfaces.

Best Practices

• ✓ Use for all body copy and descriptions
• ✓ Apply to button labels and UI elements
• ✓ Maintain consistency across your content
• ✓ Always capitalize proper nouns
• ✓ Capitalize the first word after punctuation
• ✗ Don't forget to capitalize "I" when it's a pronoun
• ✗ Avoid mixing with other capitalization styles