What case formats are supported?

The tool supports 9 case formats: UPPERCASE (all caps), lowercase (all lower), Title Case (First Letter Of Each Word), Sentence case (First letter of sentence), camelCase (firstWordLowercase), PascalCase (FirstWordUppercase), snake_case (words_with_underscores), kebab-case (words-with-hyphens), and CONSTANT_CASE (UPPER_WITH_UNDERSCORES).

Can I convert HTML or code with this tool?

Not recommended. Case conversion applies to all text, including HTML tags, which will break markup. For code, case conversion might change keywords or break syntax. Use this tool only on plain text. Convert text first, then add HTML tags or use in code if needed.

Will case conversion work correctly for other languages?

The tool uses English case conversion conventions. It may work for other languages that use similar case rules, but language-specific rules (like German capitalization) may not be handled correctly. For best results, use with English text or test with your language first.

Can I convert very long documents?

Yes, but very long documents (over 100,000 characters) may process slowly. The tool works in real-time, so processing delays can occur with extremely long text. For best performance, process text in smaller sections or use desktop software for very large documents.

What's the difference between camelCase and PascalCase?

camelCase starts with a lowercase letter (e.g., 'myVariable'), while PascalCase starts with an uppercase letter (e.g., 'MyVariable'). Both combine words without spaces, but the first letter capitalization differs. camelCase is common for variables, PascalCase for classes/types.

Case Converter - UPPER, lower, Title Case Free

When to Use This Tool

Use this when:

You're programming and need to convert variable names between camelCase, snake_case, or PascalCase
You want to format document titles or headings to Title Case or Sentence case
You need to standardize text formatting across documents (all UPPERCASE or all lowercase)
You're working with API responses or data that uses different case conventions
You want to convert file names or URLs to kebab-case or snake_case
You're preparing text for different contexts (code, documents, URLs) that require specific case formats
You need to convert constant names to CONSTANT_CASE for programming

Don't use this if:

You need to preserve special formatting, HTML tags, or markup (case conversion applies to all text)
You want to convert case for very large documents (over 100,000 characters may process slowly)
You require language-specific case conversion rules (this tool uses English conventions)
You need to convert case while preserving specific word boundaries or structures
You want to convert case for code with syntax that case conversion might break

What is a Text Case Converter?

A text case converter transforms text between different capitalization formats — uppercase, lowercase, title case, sentence case, camelCase, PascalCase, snake_case, kebab-case, and more. Our tool processes all conversions in your browser without sending your text anywhere.

Case conversion is a frequent need for writers fixing accidental caps lock text, developers converting between naming conventions (camelCase for JavaScript, snake_case for Python, kebab-case for CSS), content editors standardizing headline formatting, and data professionals cleaning up inconsistent text data.

This tool is particularly useful for programmers switching between programming language naming conventions, content managers standardizing article titles and headings, database administrators cleaning up text fields, legal professionals formatting document titles, and anyone who accidentally typed in the wrong case and doesn't want to retype everything.

Compared to doing manual case changes in a text editor (tedious and error-prone) or using programming scripts (requires coding knowledge), PureXio's converter handles all major case formats instantly with a single click. It correctly handles edge cases like acronyms, hyphenated words, and special characters.

The tool supports bidirectional conversion between all formats, includes a copy-to-clipboard button, and shows the character and word count of the converted text. Input text is preserved, so you can quickly switch between different case formats.

Best for: converting text between UPPERCASE, lowercase, Title Case, camelCase, snake_case, kebab-case, and more. Instant, one-click conversion.

How to Convert Text Case

Type or paste your text into the input field. Text is converted in real-time as you type

View all case format conversions displayed below (UPPERCASE, lowercase, Title Case, camelCase, etc.)

Click the copy button next to any case format to copy that version to your clipboard

Common Use Cases

Convert 'hello world' to 'HelloWorld' (PascalCase) for class names in programming

Convert 'My Variable Name' to 'my_variable_name' (snake_case) for Python variables

Convert 'user profile page' to 'user-profile-page' (kebab-case) for URL slugs

Convert document titles to 'Title Case' for proper formatting

Convert 'API_KEY' to 'apiKey' (camelCase) for JavaScript variables

Convert headings to 'Sentence case' for document formatting

Convert constant names to 'CONSTANT_CASE' for programming constants

Features

Convert text to 9 different case formats: UPPERCASE, lowercase, Title Case, Sentence case, camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE

Real-time conversion as you type—see all formats instantly

One-click copy for any case format

Works with any text length (small phrases to long documents)

Preserves text content—only changes letter case, not content

Supports all standard case conventions used in programming and writing

100% private—all processing happens in your browser

Limitations & Constraints

Language-specific rules: Uses English case conversion conventions—may not work correctly for other languages

Special characters: Case conversion applies to letters only—numbers, symbols, and special characters are preserved

HTML/Markup: Case conversion applies to all text including HTML tags—may break markup if used on HTML

Very long text: Text over 100,000 characters may process slowly in the browser

Context awareness: Doesn't understand context (e.g., acronyms, proper nouns)—converts all text uniformly

Troubleshooting

Case conversion doesn't work correctly for some words

Solution: The tool uses standard case conversion rules. Proper nouns, acronyms, or special terms may not convert as expected. For example, 'iPhone' in Title Case might become 'Iphone'. Review converted text and manually adjust if needed. For programming, ensure variable name conversions follow your language's conventions. Prevention: Review converted text, especially for proper nouns or technical terms.

HTML tags get converted and break markup

Solution: Case conversion applies to all text, including HTML tags. Don't use this tool on HTML content—it will convert tag names and break the markup. Use this tool only on plain text. For HTML content, use specialized HTML-aware tools or convert text before adding HTML tags. Prevention: Use this tool only on plain text, not HTML or markup.

Conversion is slow for very long text

Solution: Very long text (over 100,000 characters) may process slowly. The tool processes text in real-time, so very long documents can cause delays. Consider processing text in smaller chunks, or wait for processing to complete. For extremely long documents, use desktop software. Prevention: Process text in smaller sections if it's very long.

Case conversion doesn't match programming language conventions

Solution: Different programming languages have different case conventions. The tool provides standard conversions, but you may need to adjust for language-specific rules. For example, some languages use different rules for acronyms in camelCase. Review converted text and adjust manually if needed for your specific use case. Prevention: Understand your target language's case conventions and review converted text.

Special characters or numbers are preserved (not converted)

Solution: This is expected behavior—case conversion only affects letters. Numbers, symbols, and special characters are preserved as-is. This is correct behavior for most use cases (you don't want to change 'API_v2' to 'api_v2' if you want to keep the version number). If you need different behavior, you may need to preprocess text or use specialized tools. Prevention: Understand that case conversion only affects letters.