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Case Converter

Instantly convert your text between UPPERCASE, lowercase, Title Case, Sentence case, camelCase, PascalCase, and snake_case. Type once, convert any way you need.

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Choose Case Style

One Tool, Nine Case Styles

Writing Styles

UPPERCASE, lowercase, Title Case, and Sentence case for essays, headlines, and titles.

Developer Styles

camelCase, PascalCase, snake_case, and kebab-case for variables and file names.

Instant Results

No page reloads — every conversion happens the moment you click a style.

100% Private

Your text is processed entirely in your browser and never sent to a server.

Writing & Coding Guide

When to Use Each Text Case Style

Different situations call for different text casing. Headlines and blog titles typically use Title Case, while regular paragraphs follow Sentence case. Social media captions or emphasis sometimes call for UPPERCASE, though overusing it can come across as shouting.

In programming, casing follows strict naming conventions: JavaScript variables commonly use camelCase, class names use PascalCase, Python variables and file names often use snake_case, and URL slugs typically use kebab-case. Using the right convention keeps codebases consistent and easier for teams to read.

Frequently Asked Questions

Simple answers to help you pick the right text case

Title Case capitalizes the first letter of most major words, commonly used for headlines and book titles. Sentence case only capitalizes the very first letter of the sentence and proper nouns, matching how regular paragraphs and normal writing are formatted.
camelCase is the standard naming convention for variables and functions in JavaScript, Java, and many other languages. snake_case is more common in Python, Ruby, and database column names. The right choice usually depends on the language or framework's established style guide.
Search engines like Google treat hyphens in kebab-case as word separators, which helps them correctly read each word in a URL slug. This improves readability for both users and search engines compared to running words together or using underscores.
No. All case conversions happen instantly inside your browser using JavaScript, so your text is never uploaded to a server or saved anywhere. This makes it safe to use for private drafts or unpublished content.
Alternating case, sometimes called "mocking case" or "sponge case," switches between uppercase and lowercase letters for each character. It's mostly used casually on social media to convey sarcasm or humor rather than in any formal or technical writing context.