Case Converter
Online case converter tool. Convert text to uppercase, lowercase, title case, camelCase, snake_case, and more. Instant and secure client-side processing.
Why use an Online Case Converter?
Writing text often involves adhering to specific style guides, coding conventions, or platform requirements. Whether you are a content creator capitalizing titles for a blog post, a developer converting variable names to camelCase for a JavaScript project, or simply a user needing to fix accidental CAPS LOCK usage, a reliable case converter tool is essential. Our Case Converter Tool allows you to transform text between uppercase, lowercase, title case, and various programming syntaxes instantly. Instead of manually editing each word—which is tedious and prone to error—you can process large blocks of text in milliseconds. This tool runs entirely in your browser, ensuring that your sensitive data remains private and never leaves your device. It is the perfect utility for writers, programmers, students, and anyone looking to format text efficiently.
Key Features & Supported Formats
Instant Transformation
Convert large blocks of text (up to 50,000 characters) between multiple formats in milliseconds. No waiting for server uploads or page reloads.
Privacy First Architecture
All text processing happens 100% in your browser using client-side JavaScript. Your sensitive text data is never sent to our servers, ensuring complete privacy and security.
Developer-Friendly Formats
Supports essential coding cases including camelCase (JavaScript/Java), snake_case (Python/Database), kebab-case (URLs/CSS), and PascalCase (Classes).
Writer Productivity Tools
Quickly fix accidental Caps Lock, convert to Title Case for headlines (AP/Chicago style approximation), or standard Sentence case for clean readability.
Frequently Asked Questions
What is the difference between Title Case and Sentence Case?
Title Case capitalizes the first letter of almost every word (e.g., 'The Quick Brown Fox'), which is standard for book titles and headlines. Sentence case only capitalizes the very first letter of the sentence and proper nouns (e.g., 'The quick brown fox'), mimicking standard grammatical sentence structure.
Is my text data secure?
Absolutely. Unlike many other online tools that upload your data to a remote server for processing, CuscusLab's Case Converter runs entirely locally on your device. Your text never leaves your browser, making it safe for confidential documents or code.
Can I convert text for programming variables?
Yes! This tool is optimized for developers. You can convert any text string into camelCase (myVariable), snake_case (my_variable), kebab-case (my-variable), or PascalCase (MyVariable) instantly, saving time when refactoring code or naming files.
What does the 'Inverse Case' option do?
Inverse Case (or Swap Case) flips the case of every character in your text. Uppercase letters become lowercase and vice versa. This is often used for fun or to correct text that was accidentally typed with CAPS LOCK on while holding Shift.
Are there usage limits?
The Case Converter has no usage limits. You can convert as much text as you need, as many times as you want, without any registration or subscription.