Case Converter
Convert text between uppercase, lowercase, title case, sentence case, and more. Fast and free text case conversion tool.
Text Case Conversion Types
1. UPPERCASE
Converts all letters to uppercase (capital letters). Example: "hello world" becomes "HELLO WORLD"
Common uses: Headlines, emphasis, acronyms, coding constants
2. lowercase
Converts all letters to lowercase (small letters). Example: "HELLO WORLD" becomes "hello world"
Common uses: URLs, email addresses, hashtags, programming variables
3. Title Case
Capitalizes the first letter of each word. Example: "hello world" becomes "Hello World"
Common uses: Book titles, article headlines, proper names
4. Sentence case
Capitalizes only the first letter of each sentence. Example: "HELLO WORLD. HOW ARE YOU" becomes "Hello world. How are you"
Common uses: Normal writing, paragraphs, descriptions
5. Capitalize Each Word
Capitalizes the first letter of every single word. Example: "hello world" becomes "Hello World"
Common uses: Titles, headers, names
6. aLtErNaTiNg CaSe
Alternates between lowercase and uppercase for each character. Example: "hello" becomes "hElLo"
Common uses: Memes, sarcasm, stylistic text
Why Use a Case Converter?
- Save Time: Convert large amounts of text instantly instead of manually retyping
- Consistency: Ensure uniform text formatting across documents
- Fix Caps Lock Mistakes: Quickly fix text typed with caps lock accidentally enabled
- SEO Optimization: Convert URLs and slugs to lowercase for better SEO
- Professional Writing: Apply proper title case to headlines and headers
- Programming: Convert variable names and constants to proper case conventions
How to Use the Case Converter
- Type or paste your text into the input box
- Click on the desired case conversion button
- The converted text appears in the result box
- Click "Copy Result" to copy the converted text to your clipboard
- Paste the converted text wherever you need it
Features
🔄 6 Conversion Types
Uppercase, lowercase, title case, sentence case, capitalize each word, and alternating case.
⚡ Instant Conversion
Convert text with a single click. No waiting, no processing time.
📋 One-Click Copy
Copy converted text to clipboard instantly with the copy button.
💯 100% Free
No registration, no limits. Convert unlimited text for free.
🔒 Privacy First
All conversion happens in your browser. Your text stays private.
📱 Works Offline
Once loaded, works without internet. Perfect for offline work.
Case Conversion Rules
Title Case Rules
In proper title case, certain words are typically not capitalized unless they're the first or last word:
- Articles: a, an, the
- Coordinating conjunctions: and, but, or, nor, for, yet, so
- Prepositions (short ones): in, on, at, to, by, for
Note: Our tool uses simplified title case that capitalizes all words for ease of use.
Sentence Case Rules
- First letter of each sentence is capitalized
- Proper nouns should remain capitalized (our tool converts all to lowercase except sentence starts)
- Sentences are detected by punctuation marks: period (.), exclamation (!), question mark (?)
Frequently Asked Questions
Can I convert multiple paragraphs at once?
Yes! Our case converter can handle text of any length, including multiple paragraphs. Simply paste all your text and convert it in one go.
Does the tool preserve formatting?
The tool preserves line breaks and paragraph structure. However, it only changes letter case and doesn't preserve other formatting like bold or italics.
Is there a character limit?
No, there's no character limit. You can convert as much text as you need.
Can I use this for code?
Yes! Many developers use case converters to quickly change variable names, constants, or convert between naming conventions like camelCase, snake_case, or SCREAMING_SNAKE_CASE.
Does it work offline?
Yes! Once the page is loaded, all text conversion happens in your browser, so it works even without an internet connection.