Case Converter – Free Online Text Case Changer | FreeToolSuite

🔤

Case Converter

Convert text between UPPERCASE, lowercase, Title Case, Sentence case, camelCase, PascalCase, snake_case, kebab-case and more — instantly, no account needed.

✅ 100% Free🔤 10 Case Formats👨‍💻 Dev Naming Conventions⚡ Instant🔒 Private

⭐⭐⭐⭐⭐4.9/5(11,056 ratings)

CCCase Converter — Start Now

🔠UPPERCASEALL CAPS

🔡lowercaseall lower

📝Title CaseEach Word

✍️Sentence caseFirst only

🐪camelCasemyVarName

🏛️PascalCaseMyClass

🐍snake_casemy_var

🍢kebab-casemy-var

🔒CONSTANTMY_CONST

🔀aLtErNaTiNgaLtErNaTe

🔠

10 Case Formats

UPPERCASE, lowercase, Title Case, Sentence case, camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE and Alternating — all in one tool.

⚡

Instant One-Click

Click any case button and the result appears immediately below. No processing delay regardless of text length.

👨‍💻

All Developer Formats

camelCase, PascalCase, snake_case, kebab-case and CONSTANT_CASE — the four naming conventions used across all major programming languages.

🔒

100% Private

Your text stays in your browser. No server contact, no text retention, no logging.

⭐ User Reviews

4.9

⭐⭐⭐⭐⭐

Based on 11,056 verified reviews · 99% recommend this tool

Liam T.

Yesterday

⭐⭐⭐⭐⭐

I use snake_case for Python and camelCase for JavaScript. Having both in one tool with instant output saves so much renaming time.

Case Converter

Olivia B.

4 days ago

⭐⭐⭐⭐⭐

Title Case for blog headlines. Paste the draft title, click Title Case, copy and paste. Done in 3 seconds. I use it every single day.

Case Converter

Nina F.

1 week ago

⭐⭐⭐⭐⭐

Sentence case fixes capitalisation from PDFs with ALL CAPS headings. One click transforms the entire text perfectly.

Case Converter

James A.

2 weeks ago

⭐⭐⭐⭐

Clean and fast. All four developer naming conventions (camel, pascal, snake, kebab) are here and produce correct output every time.

Case Converter

Rosa C.

1 month ago

⭐⭐⭐⭐⭐

The CONSTANT_CASE is perfect for environment variables. I rename config keys all the time and this is by far the fastest way.

Case Converter

📖 How to Use

Paste Your Text

Type or paste any text — a single word, paragraph or multiple lines.

Click a Case Button

Click any of the 10 case buttons. The converted text appears instantly in the output area.

Copy the Result

Click Copy Output to copy the converted text to your clipboard.

Paste Into Your Work

Paste into your document, code editor, CMS or wherever you need it.

🎯 Other Text Tools

All tools are free and run in your browser.

❓ FAQ

What is Title Case?+

Title Case capitalises the first letter of most words. Short function words (a, an, the, and, but, or, for, in, on, at, to) are kept lowercase unless first or last. Follows Chicago Manual of Style.

What is the difference between camelCase and PascalCase?+

camelCase starts with lowercase (myVariableName) — used for JS/Java variables and functions. PascalCase starts with uppercase (MyClassName) — used for class names and React components.

What is snake_case?+

snake_case joins words with underscores, all lowercase: my_variable_name. Standard for Python variables, functions and file names, and used in Ruby and database columns.

What is kebab-case?+

kebab-case joins words with hyphens, all lowercase: my-component-name. Used for CSS classes, HTML attributes, URL slugs and file names in Vue, Svelte and web components.

What is CONSTANT_CASE?+

CONSTANT_CASE (SCREAMING_SNAKE_CASE) uses uppercase with underscores: MY_CONSTANT_VALUE. Used for constants and environment variables in most programming languages.

Does it work with non-English characters?+

Uppercase/lowercase works for most Unicode including accented letters (é→É). Code naming conventions are designed for Latin text and may produce unexpected results with non-Latin scripts.

Can I convert multiple paragraphs?+

Yes — the converter processes the entire input including line breaks. Sentence case preserves paragraphs. Code naming conventions strip line breaks and join all words.

Is my text private?+

Yes. All case conversion runs in JavaScript in your browser. Your text never leaves your device.

🔗 Related Tools

🔢

Word CounterCount words & stats

✏️

Text FormatterClean & format text

🔗

Text to SlugURL-friendly slugs

🔄

Paraphrasing ToolAI text rewriter

🗜️

Compress PDFReduce PDF size

📄

PDF to WordExtract PDF text

🔡

Image to Base64Encode images

🔄

Image ConverterConvert image formats

💡 Why Use Our Case Converter?

🔠

10 Cases in One Place

Every format from standard writing cases to all four developer naming conventions — without switching between multiple tools.

⚡

Instant Zero-Click

Click a button and the result is ready. No processing, no loading. Instant regardless of text length.

👨‍💻

Built for Developers

camelCase, PascalCase, snake_case, kebab-case and CONSTANT_CASE all produce correct, paste-ready output for code.

🔒

Private by Design

No text logging, no server contact. Variable names and document content stay on your device.

♾️

Any Length

A single variable name or 10,000-word document. No size restrictions.

🆓

Always Free

All 10 case formats, unlimited use, no account. Free forever.

📚 Complete Guide

When to Use Each Case Format

Case conventions communicate type and context at a glance to both readers and developers.

Popular queries: case converter online camelcase converter title case online snake case generator

Case Convention Reference

Case	Example	Used In
UPPERCASE	MY TEXT HERE	Headings, emphasis
lowercase	my text here	URLs, CSS
Title Case	My Text Here	Article titles, headings
Sentence case	My text here	Normal prose, UI labels
camelCase	myTextHere	JS/Java variables, JSON
PascalCase	MyTextHere	Classes, React components
snake_case	my_text_here	Python, Ruby, databases
kebab-case	my-text-here	CSS, URLs, HTML, Vue
CONSTANT_CASE	MY_TEXT_HERE	Env vars, config constants