🔤 Online Case Converter

What is Case Conversion?

Case conversion is the process of changing letters between uppercase and lowercase formats. Different scenarios require different case styles: programming naming conventions (camelCase, snake_case), article titles (Title Case), and everyday text processing (UPPERCASE/lowercase).

This tool provides 8 common case conversion modes to meet the needs of writing, programming, data processing, and more. All operations happen locally in your browser, keeping your text data safe and private.

8 Conversion Modes Explained

• UPPERCASE — Converts all letters to uppercase. Useful for headings, emphasis, or warning text.
• lowercase — Converts all letters to lowercase. Useful for normalizing text format.
• Title Case — Capitalizes the first letter of each word. Ideal for titles, headings, and book names.
• Sentence case — Capitalizes the first letter of each sentence. Standard for article body text.
• camelCase — First word lowercase, subsequent words capitalized. Common in JavaScript variable names.
• snake_case — All lowercase with underscores between words. Popular in Python variable names.
• kebab-case — All lowercase with hyphens between words. Used in CSS classes and URLs.
• AlTeRnAtInG — Alternating uppercase and lowercase letters (odd positions uppercase). For creative text effects.