📌 Use Cases

Case conversion is common in programming and copywriting. This tool supports uppercase, lowercase, title case, camelCase, snake_case, kebab-case, and more, processing batches locally — ideal for variable naming, title normalization, and code organization.

📖 Learn More About text case converter

Why You Need It

Normalize variable and file names consistently.
Switch title case for headings.
Fix casing after pasting from another source.

How It Works

It converts between uppercase, lowercase, Title Case, camelCase, snake_case, kebab-case, and more, processing your text in bulk.

A Quick Example

Paste 'user name', convert to snake_case, and get 'user_name' ready for your database column.

Common Mistakes

Assuming Title Case equals sentence case.
Mangling acronyms in camelCase conversion.
Losing intentional capitalization in brand names.

About the free online Text Case Converter

Looking for a free online Text Case Converter? Case conversion is common in programming and copywriting. This tool supports uppercase, lowercase, title case, camelCase, snake_case, kebab-case, and more, processing batches locally — ideal for variable naming, title normalization, and code organization. This tool is completely free and requires no registration — every operation runs locally in your browser, your data is never uploaded to any server, and you can use it anytime just by opening the page.

🔤 Text Case Converter

Convert text between UPPERCASE, lowercase, Title Case, Sentence case, camelCase, snake_case, and kebab-case. Instant conversion, all processing in your browser.

Input Text

Conversion Options

Result

🔒 All processing happens in your browser. No data is uploaded to any server.

📋 How to Use

Type or paste your text into the input box.
Click any conversion button (UPPERCASE, lowercase, Title Case, etc.).
The converted text appears in the result box instantly.
Use "Copy Result" to copy, or "Swap" to move the result back to input.

❓ FAQ

What is Title Case?

Title Case capitalizes the first letter of every word in the text. For example, "hello world" becomes "Hello World". It is commonly used for book titles, article headlines, and section headers. Some style guides exclude small words (articles, conjunctions, prepositions) from capitalization, but this tool applies a simple rule: capitalize the first letter of every word.

What is the difference between camelCase and snake_case?

camelCase capitalizes the first letter of each word except the first, and removes all spaces — e.g. "hello world" becomes "helloWorld". It is commonly used in JavaScript, Java, and C# variable names. snake_case uses underscores between words and keeps everything lowercase — e.g. "hello world" becomes "hello_world". It is commonly used in Python, Ruby, and database column names.

How do I convert to Sentence case?

Sentence case capitalizes only the first letter of each sentence and leaves the rest lowercase. Click the "Sentence case" button to convert your text. The tool detects sentence boundaries using periods, exclamation marks, and question marks, then capitalizes the first letter following each boundary.

What is kebab-case used for?

kebab-case uses hyphens between words in all lowercase — e.g. "hello world" becomes "hello-world". It is commonly used in URLs (slugs), CSS class names, and file names, as hyphens are URL-safe and more readable than underscores in web addresses.

💡 Use Cases

💻

Programming

Convert variable and function names between camelCase, snake_case, and kebab-case.

✍️

Writing & Editing

Fix accidental caps lock or convert headlines to Title Case.

🔗

URL Slugs

Convert titles to kebab-case for SEO-friendly URL slugs.

🔗 Related Tools

📚 Further Reading

Want to go deeper? These tutorials pair well with this tool.

📄Case & Naming Conventions: camelCase to kebab 📄The Complete Unit Conversion Guide: Length, Weight, Temperature & Data 📄Length Conversion Tips: Meters, Feet & Inches

Browse all tutorials →