Text Case Converter
Convert text between uppercase, lowercase, title case, sentence case, and more. Instantly transform your text with one click.
How to Use This Calculator
- Type or paste your text into the input area.
- Click one of the case conversion buttons to transform your text.
- View the converted result along with word, character, and sentence counts.
- Click "Copy Result" to copy the converted text to your clipboard.
When to Use Each Text Case
- UPPERCASE: Used for headings, acronyms, emphasis in legal documents, and warning labels. E.g., “IMPORTANT NOTICE”.
- lowercase: Common in modern branding (e.g., iPhone, adidas), URLs, and code identifiers. E.g., “hello world”.
- Title Case: Standard for titles, headlines, and article names. Capitalize major words while articles and prepositions stay lowercase. E.g., “The Quick Brown Fox”.
- Sentence case: Natural reading format for paragraphs and body text. Only the first letter of each sentence is capitalized. E.g., “The quick brown fox jumps.”.
- Alternating Case: Decorative or playful styling often used in memes and social media. E.g., “aLtErNaTiNg CaSe”.
- Inverse Case: Swaps the case of each character. Useful for toggling formatting or creating visual effects. E.g., “hELLO wORLD”.
Examples
Input: “how to write better headlines for your blog” → Title Case: “How to Write Better Headlines for Your Blog”.
Input: “john doe, software engineer” → UPPERCASE: “JOHN DOE, SOFTWARE ENGINEER”.
Input: “TODO: Fix the login bug” → Sentence case: “Todo: fix the login bug”. Sentence case is ideal for inline comments and notes.
Frequently Asked Questions
What is title case?
Title case capitalizes the first letter of each major word in a title or heading. Minor words like articles (“a”, “an”, “the”), short prepositions (“in”, “of”, “for”), and coordinating conjunctions (“and”, “but”, “or”) are typically kept lowercase unless they are the first word.
When should I use sentence case?
Sentence case is the most natural format for body text, paragraphs, descriptions, and captions. It capitalizes only the first letter of each sentence and proper nouns. It is also commonly used for form labels, table headers, and APA-style references.
What is alternating case?
Alternating case switches between lowercase and uppercase for each character in sequence (aLtErNaTiNg CaSe). It is primarily used for decorative, humorous, or mocking tones on social media and is not recommended for formal writing.
Is my text stored on a server?
No. All text processing happens entirely in your browser using JavaScript. Your input text is never sent to any server, ensuring complete privacy and security.