Case Converter

Convert text between different cases

Input Text

About the Text Case Converter

Our text case converter is a free online tool that instantly transforms text between seven different case formats with a single click. Whether you need to convert text to UPPERCASE, lowercase, Title Case, Sentence case, camelCase, kebab-case, or snake_case, this tool handles it all instantly without any sign-ups or software installation.

Text case conversion is a common task for writers, developers, editors, and content creators. Manually retyping text in a different case format is tedious and error-prone. This tool eliminates that friction by providing instant, accurate conversion for any amount of text. Simply paste your content, click the desired case format, and copy the result.

The converter supports both standard text formatting cases like Title Case and Sentence case used in writing and publishing, as well as programming-specific formats like camelCase, kebab-case, and snake_case used in code variable naming, CSS class names, URL slugs, and file naming conventions.

Key Features

Seven case conversion formats: UPPERCASE, lowercase, Title Case, Sentence case, camelCase, kebab-case, and snake_case
Instant one-click conversion with no processing delay
Copy converted text to clipboard with a single click
Side-by-side input and output for easy comparison
Handles multi-line text and preserves paragraph structure
Color-coded buttons separating text cases (blue) from code cases (green)
Works with any language that supports uppercase and lowercase characters
No character or word limit on input text length
Full dark mode support for comfortable editing
100% client-side processing with no data sent to servers

How to Use the Case Converter

Enter your text: Type or paste the text you want to convert into the input text area at the top of the tool.
Choose a case format: Click one of the seven conversion buttons: UPPERCASE, lowercase, Title Case, Sentence case, camelCase, kebab-case, or snake_case.
Review the output: The converted text appears instantly in the output text area below the buttons, ready for review.
Copy the result: Click the copy icon in the top-right corner of the output area to copy the converted text to your clipboard.
Convert again: You can click any other case format button to convert the same input text to a different case without re-entering it.

Use Cases

Headline Formatting: Convert article titles, blog post headings, and email subject lines to Title Case for professional, consistent formatting.
Programming Variables: Transform descriptive phrases into camelCase for JavaScript variables, snake_case for Python variables, or kebab-case for CSS classes.
URL Slug Creation: Convert page titles and headings to kebab-case for clean, SEO-friendly URL slugs used in websites and blogs.
Data Normalization: Standardize text data by converting all entries to lowercase or UPPERCASE for consistent database storage and comparison.
Social Media Content: Convert text to UPPERCASE for emphasis in social media posts, or sentence case for clean, readable captions.
CSS Class Naming: Transform component names into kebab-case following CSS naming conventions like BEM methodology.
Database Column Names: Convert descriptive labels to snake_case for SQL database column names and table identifiers.
Document Formatting: Quickly fix text that was accidentally typed in the wrong case without retyping entire paragraphs.

Frequently Asked Questions

Is this tool free?

Yes, our text case converter is completely free to use with no limits on text length or number of conversions. No sign-up or subscription is required.

Is my data secure?

Absolutely. All text conversion happens entirely in your browser using client-side JavaScript. Your text is never sent to any server, stored, or logged. Your content remains completely private on your device.

What is the difference between camelCase and snake_case?

camelCase joins words together with each subsequent word capitalized (e.g., "myVariableName"), commonly used in JavaScript and Java. snake_case joins words with underscores and keeps everything lowercase (e.g., "my_variable_name"), commonly used in Python and database columns.

What is Title Case vs. Sentence case?

Title Case capitalizes the first letter of every word (e.g., "The Quick Brown Fox"). Sentence case capitalizes only the first letter of each sentence (e.g., "The quick brown fox."). Title Case is used for headlines while Sentence case is used for regular body text.

Does it work with special characters and numbers?

Yes. The converter handles special characters and numbers gracefully. For programming cases like camelCase and kebab-case, non-alphanumeric characters are used as word separators and replaced with the appropriate delimiter.

What is kebab-case used for?

kebab-case (words separated by hyphens, all lowercase) is commonly used for CSS class names, URL slugs, HTML attributes, and file names. It is the standard naming convention in many front-end frameworks.

Tips & Best Practices

Use Title Case for headings: Apply Title Case to blog post titles, article headlines, and section headings for professional, consistent formatting across your content.
Follow language conventions: Use camelCase for JavaScript variables, snake_case for Python, and kebab-case for CSS classes to maintain code consistency.
Normalize data before comparison: Convert text to lowercase before performing string comparisons to ensure case-insensitive matching in your applications.
Create URL slugs from titles: Convert page titles to kebab-case to generate clean, SEO-friendly URL slugs automatically.
Fix accidental caps lock: If you accidentally typed a large block of text in UPPERCASE, simply paste it here and convert to Sentence case or lowercase instantly.