Text Case Converter - 7 Formats Instantly
Convert text to UPPERCASE, lowercase, Title Case, camelCase, snake_case and more. Instant results, free online tool.
Change text case instantly
Whether you need to convert text to uppercase for headings, lowercase for URLs, Title Case for titles, or camelCase/snake_case for code - this tool converts instantly. Supports 7 different case formats.
Text case conversion uses Unicode-aware string operations to transform characters. Simple transformations like uppercase and lowercase map each character individually. More complex cases like Title Case apply language-aware rules - for example, articles ('a', 'the') and prepositions ('in', 'of') are not capitalized in English title case unless they begin the phrase.
Common use cases include formatting headings for blog posts and articles (Title Case), normalizing user-submitted data in databases (lowercase), creating CSS class names from labels (kebab-case), converting between programming naming conventions (camelCase to snake_case), and fixing text that was accidentally typed with caps lock on.
When converting variable names between coding conventions, pay attention to word boundaries. Converting 'userAccountID' to snake_case should produce 'user_account_id', not 'user_account_i_d'. For titles, use Title Case rather than UPPERCASE - all-caps text is harder to read and can appear aggressive in digital communication.
Most text editors offer basic case conversion (uppercase/lowercase), but programming-specific formats like camelCase, snake_case, and kebab-case require dedicated tools or regex. This converter handles all common text cases in one place, including the programming-oriented formats that word processors don't support.
How the Text Case Converter Works
- 01Paste or type your text into the input field
- 02Select the target case: UPPER, lower, Title Case, Sentence case, or others
- 03The converted text appears instantly
- 04Copy the result to your clipboard with one click
When to Use Different Text Cases
Title Case capitalizes the first letter of each major word and is standard for headings and titles. Sentence case capitalizes only the first word and is preferred for most body text. UPPER CASE is useful for acronyms or emphasis but should be used sparingly in body text. camelCase and snake_case are common in programming - camelCase for JavaScript variables, snake_case for Python.
When to Use a Text Case Converter
Use this for consistent formatting: title case headings, camelCase to snake_case variable names, UPPERCASE for emphasis, or normalizing mixed-case data.
Common Use Cases
- Convert blog post titles to Title Case for consistent heading formatting Word Counter & Character Counter - Free Online
- Transform JavaScript variable names from camelCase to snake_case for Python code
- Fix accidentally caps-locked text without retyping it
- Generate CSS class names in kebab-case from descriptive labels
- Normalize mixed-case database entries to lowercase for consistent searching
Expert Tips
- Use Title Case for headings and Sentence case for body text - UPPERCASE text is harder to read and can feel aggressive
- When converting between coding conventions, verify word boundaries are detected correctly (e.g., 'userID' should split as 'user' + 'ID')
- For SEO titles, use Title Case but keep articles (a, the) and prepositions (in, of, for) lowercase unless they start the title
Frequently Asked Questions
- UPPERCASE, lowercase, Title Case, Sentence case, camelCase, snake_case, kebab-case, and CONSTANT_CASE.
- Title case capitalizes every major word. Sentence case only capitalizes the first word and proper nouns.
- Yes: camelCase (JS), snake_case (Python), kebab-case (CSS), PascalCase (classes), CONSTANT_CASE.
- Yes, completely free. All conversion happens in your browser.
What cases are supported?→
Title case vs sentence case?→
Can I convert code variable names?→
Is this free?→
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