Free Online Text Case Converter
Convert text between 18 different case formats instantly. Transform to uppercase, lowercase, camelCase, snake_case, kebab-case, and more with real-time text statistics.
Free • No sign-up • Privacy-focused
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Popular Case Converters
Most commonly used text transformation tools for everyday formatting, programming, and professional writing.
Uppercase
basic Transform any text to all capital letters instantly
Example:
HELLO WORLD
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Lowercase
basic Transform any text to all lowercase letters instantly
Example:
hello world
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Sentence Case
basic Automatically capitalize the first letter of each sentence
Example:
Hello world. This is a test.
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Title Case
professional Convert text to proper title case following standard capitalization rules
Example:
The Quick Brown Fox Jumps over the Lazy Dog
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Alternating Case
creative Generate alternating uppercase and lowercase letters
Example:
hElLo wOrLd
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camelCase
programming Transform text into camelCase format for programming
Example:
helloWorld
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PascalCase
programming Transform text into PascalCase format for programming
Example:
HelloWorld
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snake_case
programming Transform text into snake_case format for programming
Example:
hello_world
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kebab-case
programming Transform text into kebab-case format for URLs and CSS
Example:
hello-world
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Why Use ConvertCase.co?
18 Case Formats
From uppercase to camelCase to kebab-case. Every text format you need in one place.
Instant Conversion
Transform text instantly. No waiting, no loading, no delays. Just results.
Developer Friendly
7 programming formats including camelCase, snake_case, and PascalCase.
Preserve Formatting
Line breaks, paragraphs, and spacing stay intact. Only case changes.
Copy, Download, or Upload
One-click copy, download as file, or upload files for conversion.
Real-Time Statistics
Character count, word count, reading time, and more as you type.
UTF-8 Support
Works with international characters and special symbols perfectly.
Mobile Optimized
Fully responsive design. Convert text on any device, anywhere.
100% Free & Private
No registration, no data stored. Completely free forever.
Perfect For
Developers
Convert variable names, function names, and code identifiers to match programming conventions instantly.
- • JavaScript/TypeScript: camelCase, PascalCase
- • Python/Ruby: snake_case
- • URLs/CSS: kebab-case
- • Constants: CONSTANT_CASE
Content Writers
Fix formatting issues, standardize capitalization, and ensure proper title case for headlines and articles.
- • Fix accidental CAPS LOCK text
- • Create professional headlines
- • Format blog post titles
- • Standardize sentence case
Social Media Managers
Generate hashtags, create attention-grabbing posts, and format content for different platforms.
- • Convert text to #hashtags
- • Create alternating case for memes
- • Format titles for posts
- • Generate unique text effects
Data Analysts
Standardize data formats, clean up database entries, and prepare data for processing.
- • Normalize database fields
- • Clean CSV/Excel data
- • Standardize column names
- • Format data exports
Designers
Format text for logos, create design mockups, and ensure consistent typography across projects.
- • Format brand names and logos
- • Create typography samples
- • Test different case styles
- • Prepare presentation text
Business Professionals
Format documents, emails, presentations, and reports with proper capitalization standards.
- • Format email subject lines
- • Create professional titles
- • Standardize document headers
- • Fix formatting errors
All 18 Case Converters
Transform your text with our comprehensive collection of case conversion tools. From basic uppercase to programming conventions like camelCase and snake_case.
4 Basic Converters
2 Professional Converters
7 Programming Converters
camelCase
Transform text into camelCase format for programming
PascalCase
Transform text into PascalCase format for programming
snake_case
Transform text into snake_case format for programming
kebab-case
Transform text into kebab-case format for URLs and CSS
CONSTANT_CASE
Transform text into CONSTANT_CASE for programming constants
dot.case
Transform text into dot
COBOL-CASE
Transform text into COBOL-CASE format with uppercase and hyphens
2 Creative Converters
1 Social Media Converters
Frequently Asked Questions
What is a case converter and how does it work?
A case converter is a text transformation tool that changes the capitalization format of your text. Simply paste your text, select a conversion type (like uppercase, lowercase, camelCase, etc.), and instantly transform your text to the desired format. The tool preserves your original spacing and line breaks while only changing letter case.
How many case conversion formats are available?
ConvertCase.co offers 18 different case conversion formats including basic formats (Uppercase, Lowercase, Sentence Case, Title Case), programming conventions (camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE), creative formats (Alternating Case, Random Case), and specialized formats (Hashtag Case, Train-Case, COBOL-CASE, dot.case).
Is the case converter tool completely free?
Yes! ConvertCase.co is 100% free to use with no limitations. You can convert unlimited text without registration, subscriptions, or hidden fees. All 18 case conversion tools are available for free, forever.
Do you store or track my text data?
No, we never store, track, or collect your text data. All conversions happen directly in your browser. Your privacy is our priority - no accounts, no tracking cookies, no data collection. Your text stays completely private.
Which programming languages use camelCase vs snake_case?
camelCase is commonly used in JavaScript, TypeScript, Java, and C# for variable and function names. snake_case is the standard in Python, Ruby, and for database table/column names. PascalCase is used for class names in most languages. kebab-case is preferred for URLs and CSS class names.
Can I convert text from uploaded files?
Yes! You can upload .txt, .md, .json, .csv, and .log files directly. The converter will process the file content and apply your chosen case transformation. You can then download the converted text or copy it to your clipboard.
Does the tool preserve line breaks and formatting?
Absolutely. Our case converters preserve all line breaks, paragraph spacing, and text structure. Only the letter case is changed according to your selected format. Numbers, punctuation, and special characters remain unchanged.
What is the difference between Title Case and Capitalized Case?
Title Case follows professional style guides by capitalizing major words while keeping minor words (like 'a', 'the', 'and', 'of') lowercase. Capitalized Case capitalizes the first letter of every word without exceptions. Title Case is better for professional titles and headlines, while Capitalized Case is useful for names and certain display text.
Can I use this for converting large amounts of text?
Yes! There are no character limits. You can convert large documents, code files, or data exports of any size. The tool provides real-time statistics showing character count, word count, line count, and reading time as you work.
Does the converter work with international characters?
Yes, our converters support UTF-8 encoding and work perfectly with international characters, accented letters, and special symbols. Whether you're working with English, Spanish, French, German, or any other language using Latin script, the tool handles it correctly.
What is CONSTANT_CASE used for?
CONSTANT_CASE (also called SCREAMING_SNAKE_CASE) is the universal standard for naming constants and environment variables in programming. It uses all uppercase letters with underscores separating words (e.g., MAX_CONNECTION, API_KEY). This format makes constants highly visible and distinguishable from regular variables.
How do I create hashtags from text?
Use the Hashtag Case converter to automatically convert your text into hashtag format. It converts text to lowercase and adds a # symbol before each word, creating multiple hashtags separated by spaces (e.g., 'social media marketing' becomes '#social #media #marketing'). Perfect for Twitter, Instagram, LinkedIn, and TikTok posts.
Can I download the converted text?
Yes! After converting your text, you can: (1) Copy it to clipboard with one click, (2) Download it as a .txt file, (3) Upload a file for conversion, or (4) Send it via email. All options are available for every conversion type.
What's the best case format for URLs?
kebab-case is the best format for URLs and web slugs because it's SEO-friendly, readable, and uses web-safe characters. Search engines treat hyphens as word separators, making 'best-practices-guide' better than 'best_practices_guide' or 'bestpracticesguide' for URLs.
Is this tool useful for fixing CAPS LOCK mistakes?
Absolutely! If you accidentally typed with CAPS LOCK on, use the Toggle Case or Inverse Case converter to instantly fix your text. These converters swap uppercase to lowercase and vice versa. You can also use Sentence Case to properly format the text with correct capitalization.