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A text case converter is an essential tool for writers, editors, students, and developers who need to quickly transform text between different capitalization formats. This free online change text case tool instantly converts text to uppercase, lowercase, sentence case, title case, and specialized formats like camelCase, snake_case, and kebab-case. Whether you're formatting emails, editing blog posts, cleaning code, or preparing documents, this uppercase to lowercase converter provides instant, accurate text transformation without manual editing.
Perfect for writers ensuring consistent formatting, developers converting variable names, students preparing assignments, and professionals cleaning up copied text. This sentence case converter processes all text locally in your browser—no data is sent to servers, ensuring complete privacy and security for your content. No signup required, no usage limits, and works on all devices.
Text case refers to the capitalization pattern used in written text. Common case types include: lowercase (all letters small: "hello world"), uppercase (all letters capital: "HELLO WORLD"), title case (first letter of each major word capitalized: "Hello World"), and sentence case (first letter of first word capitalized: "Hello world"). Specialized formats include toggle case (inverts capitalization: "hELLO wORLD"), camelCase (first word lowercase, subsequent words capitalized: "helloWorld"), PascalCase (all words capitalized: "HelloWorld"), snake_case (words separated by underscores: "hello_world"), and kebab-case (words separated by hyphens: "hello-world").
Case matters significantly in writing and formatting. Proper case usage improves readability, ensures professional appearance, and follows style guidelines. In programming, case conventions are critical: variable names use camelCase or snake_case, class names use PascalCase, and constants use UPPERCASE. In writing, title case is standard for headings, sentence case for body text, and proper capitalization is essential for professional communication.
This title case online tool handles all these conversions automatically, following proper capitalization rules. For example, title case correctly capitalizes major words while keeping small words (a, an, the, and, but, etc.) lowercase unless they're the first or last word. This convert case tool ensures your text follows proper formatting conventions instantly.
Clean up text copied from various sources before sending emails or messages. Convert ALL CAPS messages to sentence case for readability, or format subject lines in title case for professional appearance. This text transform tool online ensures your communications are properly formatted.
Format blog post titles, headings, and content consistently. Convert headings to title case, ensure body text uses sentence case, and maintain consistent formatting throughout your content. This helps create professional, readable blog posts that follow publishing standards.
Convert text to programming case formats: camelCase for variables, PascalCase for classes, snake_case for Python variables, and kebab-case for CSS class names. This is essential when converting text to code identifiers or standardizing naming conventions across projects.
Format document titles, article headings, and section headers consistently. Convert improperly capitalized titles to proper title case, ensuring all major words are capitalized while keeping articles and prepositions lowercase. This creates professional, publication-ready headings.
Standardize text data in spreadsheets, databases, or CSV files. Convert inconsistent capitalization to a uniform format (lowercase, uppercase, or title case) for data analysis, reporting, or import into other systems. This ensures data consistency and prevents duplicate entries caused by case differences.
Paste your text into the input textarea. You can paste text from any source: documents, web pages, emails, code editors, or other applications. The tool accepts text of any length (limited only by browser memory). The tool automatically detects the current case type and displays it in the "Detected" indicator.
Click one of the case conversion buttons: UPPERCASE, lowercase, Sentence case, Title Case, tOGGLE cASE, camelCase, PascalCase, snake_case, or kebab-case. The conversion is applied instantly, and the result appears in the output textarea. You can apply multiple conversions sequentially if needed.
The converted text appears immediately in the output textarea. You can compare the input and output side-by-side to verify the conversion. The tool also displays statistics: character count, word count, sentence count, paragraph count, and line count to help you track your text metrics.
Click the "Copy" button next to the output textarea to copy the converted text to your clipboard. You can also download the text as a .txt, .md (Markdown), or .json file using the download dropdown. Use Live Mode to see real-time conversion as you type, or disable it for manual control.
Pro Tip: Use the advanced text cleaning options (remove extra spaces, remove line breaks, fix punctuation) in combination with case conversion for comprehensive text formatting. Enable Live Mode for real-time conversion feedback. The tool automatically detects your text's current case type to help you choose the right conversion.
Input (mixed case):
Output (Sentence case):
All sentences start with capital letters, and the rest of each sentence is converted to lowercase, creating proper sentence case formatting.
Input (lowercase):
Output (Title Case):
Major words are capitalized, while small words like "the" remain lowercase (except when they're the first or last word). This creates proper title case formatting suitable for headings and titles.
Input (normal case):
Output (tOGGLE cASE):
All uppercase letters become lowercase, and all lowercase letters become uppercase. This creates an inverted case effect, useful for testing or creating stylistic text variations.
This case converter free tool supports nine case types: UPPERCASE (all capital letters), lowercase (all small letters), Sentence case (first letter of each sentence capitalized), Title Case (major words capitalized), tOGGLE cASE (inverted capitalization), camelCase (for variables), PascalCase (for classes), snake_case (for Python/underscore naming), and kebab-case (for CSS/URL-friendly names). Each conversion follows proper formatting rules for its respective case type.
Yes, this text case converter is completely free to use with no signup required. There are no usage limits, no hidden fees, and no account creation needed. The tool works entirely in your browser, ensuring fast performance and complete privacy. For related text processing needs, explore our other text utilities including the word counter and remove extra spaces tool.
Yes, this text case converter is fully responsive and works on all devices, including smartphones and tablets. The interface adapts to smaller screens, and all features—text input, case conversion, copying, and downloading—are available on mobile browsers. Perfect for converting text on the go.
Yes, the tool can fix improper capitalization by converting text to the correct case format. For example, if you have text in ALL CAPS, you can convert it to sentence case or title case. If you have mixed case text, you can standardize it to lowercase, uppercase, or proper title case. The tool follows proper capitalization rules for each case type.
No, the tool only changes letter capitalization. Punctuation marks (periods, commas, exclamation marks, question marks, etc.) remain unchanged. The tool focuses solely on converting letter case while preserving all punctuation and special characters in their original positions.
Yes, the tool preserves line breaks and paragraph structure. When you convert text, the original formatting (line breaks, paragraphs, spacing) is maintained. You can use the advanced text cleaning options (remove line breaks, remove extra spaces) if you want to modify formatting, but by default, formatting is preserved.
This tool focuses solely on text case conversion and formatting. It does not fix grammar errors, improve sentence structure, or correct writing mistakes. It's designed specifically for changing capitalization patterns. For comprehensive text editing, combine this tool with other our writing tools like grammar checkers or spell checkers.
The tool converts case but does not correct spelling errors. If your text contains misspelled words, those misspellings will be preserved in the converted output. Always proofread your text after conversion, especially for important documents or publications. Use spell checkers or proofreading tools in combination with case conversion for best results.
For best results, review the converted text before copying, especially for important documents. Use the appropriate case type for your use case (title case for headings, sentence case for body text, camelCase for code). Combine case conversion with text cleaning options (remove extra spaces, fix punctuation) for comprehensive formatting. Use Live Mode for real-time feedback, or disable it for manual control. Explore our related productivity tools like the online notepad for a complete text editing workflow.
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Read more →Our text case converter supports uppercase, lowercase, sentence case, title case, camelCase, PascalCase, snake_case, kebab-case, and inverse case. You can also use advanced text cleaning options like removing extra spaces, fixing punctuation, and removing duplicates.
Yes! Enable 'Live Mode' to see conversions happen instantly as you type. You can also disable live mode for manual control, allowing you to edit your text before converting.
Yes! The tool includes advanced text cleaning options including removing extra spaces, removing line breaks, fixing punctuation, removing duplicate lines, and removing emojis. You can use these features together with case conversion for comprehensive text formatting.
Yes! Our text case converter is 100% free with no registration required, no usage limits, and no hidden fees. You can convert as much text as you need.
No, all text conversion happens locally in your browser. We don't store, save, or have access to any text you convert. Your privacy is completely protected.
Absolutely! The text case converter is fully responsive and works perfectly on smartphones, tablets, and desktop computers. The interface adapts to your screen size for optimal usability.