Case Converter: Instantly Transform Text Case (UPPER, lower, Title & More)

Sometimes you paste text that’s ALL CAPS and need it readable. Other times you’re coding and need to switch between camelCase, snake_case, or kebab-case. A case converter handles all these transformations in one click.

Use the MetisTools free case converter to transform text between 8 different case formats.

All Case Formats Explained

Case	Example	Common Use
lowercase	hello world	General text, URLs
UPPERCASE	HELLO WORLD	Headlines, emphasis
Title Case	Hello World	Article titles, headers
Sentence case	Hello world	Body text, emails
camelCase	helloWorld	JavaScript variables
PascalCase	HelloWorld	Class names, components
snake_case	hello_world	Python variables, file names
kebab-case	hello-world	CSS classes, URLs

When to Use Each Case

For Writers & Editors

• Sentence case — for body text, emails, and general writing
• Title Case — for article headlines, book titles, and section headers
• UPPERCASE — sparingly, for acronyms or strong emphasis

For Developers

• camelCase — JavaScript, TypeScript, Java variable names
• PascalCase — React components, C# classes, TypeScript types
• snake_case — Python variables, Ruby methods, database columns
• kebab-case — CSS class names, HTML file names, URLs

How to Use Our Case Converter

1. Paste or type your text in the input area
2. Select the target case from the dropdown — lowercase, UPPERCASE, Title Case, sentence case, camelCase, PascalCase, snake_case, or kebab-case
3. See the result instantly — no button click needed for most modes
4. Copy the converted text with one click

Why Our Case Converter Stands Out

• 8 case formats — more than the typical 3-4 offered by other tools
• Smart detection — handles multi-word input intelligently
• Instant results — converts as you type
• Copy button — one-click to clipboard
• Free forever — no limits, no signup

Quick Case Reference for Programmers

Switching between languages? Here’s your cheat sheet:

• JavaScript / TypeScript: camelCase for variables, PascalCase for classes
• Python: snake_case for variables and functions, PascalCase for classes
• CSS / HTML: kebab-case for classes and IDs
• SQL: UPPERCASE for keywords, snake_case for table/column names

Related Tools:

• Encode / Decode
• Regex Tester
• Text Analyzer