Case Converter Tool

Convert text case online in seconds.

Change uppercase, lowercase, sentence case, title case, camel case, snake case, and many more formats.

This advanced case converter works directly in your browser.

How It Works

Enter or paste your text.

Select the required text case.

Click “Convert” to generate the result.

The tool automatically moves to the converted text after manual conversion.

Quick Case Converter

Use one-click buttons for common text case conversions.

• Sentence case
• lower case
• UPPER CASE
• Title Case
• Capital Case
• camelCase
• snake_case
• kebab-case

Writing Case Converter

The text case converter supports common writing and capitalization styles.

Advanced Title Case Converter

Convert headings and titles using different capitalization profiles.

• Smart Title Case.
• AP Title Case.
• APA Title Case.
• Chicago Title Case.
• MLA Title Case.
• AMA Title Case.
• Bluebook Title Case.
• New York Times Title Case.
• Wikipedia Title Case.

These options are useful for articles, essays, headlines, academic writing, and web content.

Sentence Case Converter

Turn incorrectly capitalized text into sentence case.

The first letter of each sentence is capitalized automatically.

Uppercase Converter

Convert lowercase text to uppercase instantly.

Use it for headings, labels, identifiers, and highlighted text.

Lowercase Converter

Change uppercase or mixed text into lowercase.

This is useful for clean text formatting and data preparation.

Capital Case Converter

Capitalize the first letter of each word.

It is useful for names, labels, headings, and short titles.

Developer Case Converter

Convert text into popular programming naming conventions.

Developers can create variable names, identifiers, constants, paths, and configuration keys.

More Programming Case Formats

The developer case converter includes additional naming styles.

• Header-Case.
• flatcase.
• UPPERFLATCASE.
• no case.
• COBOL-CASE.
• Ada_Case.
• Pascal_Snake_Case.
• camel_Snake_Case.
• Namespace.Case.

SEO URL Slug Generator

Convert text into a clean SEO URL slug.

Spaces are replaced with URL-friendly separators.

This is useful for blog posts, product pages, and website URLs.

Example:

Best Online Case Converter Tool becomes best-online-case-converter-tool.

CSS Variable Generator

Convert normal text into a CSS custom property.

Example:

Primary Button Color becomes –primary-button-color.

Environment Variable Generator

Create environment variable names from normal text.

Example:

database server url becomes DATABASE_SERVER_URL.

Hashtag Generator

Turn words into a clean hashtag format.

Example:

online case converter becomes #OnlineCaseConverter.

Acronym Generator

Create initials from words automatically.

Example:

Search Engine Optimization becomes SEO.

Safe File Name Generator

Convert titles into clean file names.

This helps create simple names for documents, images, downloads, and web files.

Custom Separator Converter

Create your own text naming format.

Choose a custom separator between words.

You can also choose the word style.

• lower case.
• UPPER CASE.
• Capital Case.
• Preserve original words.

Text Cleanup Tools

The case conversion tool also includes advanced text cleanup functions.

• Remove accents and diacritics.
• Remove all spaces.
• Normalize whitespace.
• Convert text to one line.
• Trim every line.
• Remove blank lines.
• Remove duplicate lines.
• Sort lines A to Z.
• Sort lines Z to A.
• Reverse word order.
• Reverse line order.

Remove Duplicate Lines

Delete repeated lines from a list.

This is useful for keywords, URLs, usernames, product lists, and data cleanup.

Alphabetical Line Sorter

Sort text lines alphabetically.

Choose ascending or descending order.

Remove Accents and Diacritics

Convert accented characters into simpler forms where supported.

This can help prepare text for URLs, identifiers, and file names.

Unicode Text Styles

Create several Unicode text styles.

• Ｆｕｌｌｗｉｄｔｈ text.
• Sᴍᴀʟʟ Cᴀᴘs text.
• Ⓒⓘⓡⓒⓛⓔⓓ text.
• S̶t̶r̶i̶k̶e̶t̶h̶r̶o̶u̶g̶h̶ text.
• U̲n̲d̲e̲r̲l̲i̲n̲e̲ text.

Locale-Aware Case Conversion

Select a language locale for more accurate letter conversion.

• English.
• Turkish.
• Azerbaijani.
• Lithuanian.
• German.
• French.
• Spanish.
• Portuguese.
• Italian.

Conversion Settings

Open “Conversion settings” when you need more control.

The advanced options stay hidden by default for a compact interface.

Preserve Acronyms

Keep acronyms such as API and APIs intact during supported writing case conversions.

Preserve iPhone and OpenAI Case

Protect intentional mixed capitalization.

Words such as iPhone and OpenAI can keep their original style.

Protect URLs, Emails, Mentions, and Hashtags

Protect important text while changing capitalization.

• Website URLs.
• Email addresses.
• @mentions.
• #hashtags.

Treat Each Line Separately

Process every line as separate text.

This is useful for lists, headings, names, and bulk text conversion.

Live Case Conversion

Enable live conversion for instant results.

The converted text updates while you type.

Strip Accents Before Conversion

Remove accents before applying the selected case format.

This is useful for slugs and technical identifiers.

Normalize Extra Spaces

Clean unnecessary spacing before conversion.

This helps produce consistent output.

Show All Cases

Click “Show All Cases” to preview multiple case formats at once.

Select a preview to use that conversion.

Text Statistics

View useful text information while you work.

Paste Text

Click “Paste” to load text from your clipboard when browser permission is available.

Load Text and Source Files

Load supported text or source-code files directly into the case converter.

You can also drag and drop a supported file into the text area.

Supported formats include common TXT, Markdown, CSV, JSON, HTML, XML, log, CSS, JavaScript, TypeScript, PHP, Python, Java, and C/C++ source files.

HTML to Text Conversion

Load an HTML file to extract its visible text.

The extracted content can then be converted into another case.

Undo and Redo

Use “Undo” to return to an earlier input.

Use “Redo” to restore the next input state.

Use Result as Input

Click “Use as Input” to move converted text back into the input box.

You can then apply another conversion.

Copy Converted Text

Click “Copy Result” to copy the converted text.

The result is ready to paste into another website, document, editor, or application.

Download Converted Text

Download the converted result as a TXT file.

Keyboard Shortcuts

Use keyboard shortcuts for faster text case conversion.

• Ctrl/Cmd + Enter: Convert text.
• Alt + U: UPPER CASE.
• Alt + L: lower case.
• Alt + S: Sentence case.
• Alt + T: Title Case.
• Alt + C: camelCase.
• Alt + K: kebab-case.

Private Browser-Based Case Converter

Your text stays in your browser.

The conversion does not require an external API.

The tool does not send your converted text to WordPress through AJAX.

Conversion history is not stored in WordPress.

Who Can Use This Case Converter?

The online case converter is useful for many tasks.

• Writers formatting articles and headings.
• Students preparing assignments and titles.
• Bloggers creating clean headlines.
• SEO professionals generating URL slugs.
• Developers converting variable naming styles.
• Programmers creating camelCase and snake_case names.
• Social media users creating hashtags.
• Editors fixing capitalization.
• Data users cleaning lists and duplicate lines.

Why Use an Advanced Case Converter?

Manual capitalization takes time.

Large blocks of text make it even slower.

This text case converter changes formatting instantly.

It combines writing cases, programming cases, SEO formats, and text cleanup tools in one place.

Popular Case Converter Uses

• Convert text to uppercase online.
• Convert uppercase to lowercase.
• Change text to sentence case.
• Convert text to title case.
• Convert words to camelCase.
• Convert text to snake_case.
• Convert text to kebab-case.
• Create an SEO-friendly URL slug.
• Generate programming variable names.
• Remove duplicate lines from text.
• Sort text lines alphabetically.
• Normalize spaces in text.
• Create hashtags from words.
• Generate acronyms from phrases.

Important Notes

• Review specialized title styles when strict editorial compliance is required.
• Proper nouns may require manual review after some conversions.
• Mixed-case preservation is useful for names such as iPhone and OpenAI.
• Locale selection can affect uppercase and lowercase conversion.
• Unicode styled text may display differently on some devices or fonts.
• Large files are subject to browser safety limits.

Conclusion

The Case Converter makes text capitalization fast and simple.

It supports everyday writing cases and advanced developer naming conventions.

It also includes SEO slug generation, text cleanup, Unicode styles, file loading, and privacy-focused browser processing.

Use it to convert text case online without manually rewriting your content.