When to Use Title Case, Sentence Case, and UPPERCASE

Choosing the right case improves readability and consistency across your content and UI.

Common conventions

• Sentence case — Capitalize only the first word (and proper nouns). Great for body text and many modern UIs.
• Title Case — Capitalize Major Words. Common in book titles and classic headlines.
• UPPERCASE — Use sparingly for emphasis or acronyms; long uppercase blocks are hard to read.
• lowercase — Brand styles or casual tones; avoid for formal documents.
• camelCase / snake_case — Mostly for programming identifiers.

Save time

Paste text into our case converter to switch formats instantly instead of retyping.