Case Converter
Easily convert text between Uppercase, Lowercase, Title Case, Sentence case, and developer formats.
What is a Case Converter Tool?
A Case Converter is a handy text utility that allows you to change the capitalization style of any text block automatically. Whether you accidentally left the "Caps Lock" key on and typed a whole paragraph in uppercase, or you need to format a blog post title correctly, this tool saves you from having to retype everything manually.
Our tool runs instantly in your browser, ensuring your text remains private and is never sent to a server. It supports standard grammatical cases as well as specialized formats for programmers and web developers.
Understanding the Different Text Cases
You might be wondering which case to use for your specific needs. Here is a breakdown of the most common text styles available in our tool:
1. Sentence Case
Example: "This is a standard sentence. It looks like this."
This is the standard grammatical format for most written languages. The first letter of the first word in every sentence is capitalized, while the rest of the text is in lowercase (except for proper nouns). Use this for:
- Body text in articles and emails.
- Social media posts (Facebook, Twitter).
- Documentation and reports.
2. Lower Case
Example: "this text has no capital letters."
This transforms every character into its small form. It is often used for:
- Data cleaning and normalization.
- Creating tags or hashtags.
- Casual instant messaging.
3. UPPER CASE
Example: "THIS TEXT IS SHOUTING AT YOU."
This capitalizes every single letter. It is useful for:
- Headlines that need extreme emphasis.
- Acronyms (like SEO, HTML, NASA).
- Legal warnings or "Terms and Conditions" headers.
4. Capitalized Case (Start Case)
Example: "Every Word In This Sentence Is Capitalized."
This capitalizes the first letter of every word, regardless of its length or function. This is often used for aesthetic purposes in design, though it is not grammatically standard for titles.
5. Title Case (Smart Casing)
Example: "The Quick Brown Fox Jumps over the Lazy Dog"
This is the proper format for headlines, book titles, and movie names. It capitalizes major words but leaves minor words (conjunctions, articles, and prepositions like "and," "the," "in," "of") in lowercase, unless they are the first word of the sentence. This is essential for SEO Titles and blog headers.
6. Alternating Case
Example: "tHiS iS aLtErNaTiNg cAsE."
Often used in meme culture (specifically the Mocking SpongeBob meme) to convey sarcasm or mockery.
Developer Specific Cases
For programmers, variable naming conventions are crucial. Our tool supports the most popular coding styles:
Camel Case (camelCase)
Used widely in JavaScript and Java. The first word is lowercase, and subsequent words are capitalized, with no spaces.
Pascal Case (PascalCase)
Similar to camelCase, but the very first letter is also capitalized. Used for Class names in many languages.
Snake Case (snake_case)
Words are separated by underscores. This is the standard for Python variables and database file names.
Kebab Case (kebab-case)
Words are separated by hyphens. This is the standard for CSS classes and URL slugs (SEO-friendly URLs).
Why Use This Tool?
- Fix Accidental Caps Lock: Did you type a whole email with Caps Lock on? Don't delete it. Just paste it here and click "Sentence Case."
- SEO Optimization: Use "Title Case" or "Lowercase" (for URLs) to ensure your content follows search engine best practices.
- Productivity: Formatting lists of names or addresses in Excel? Clean them up here in seconds.
- Programming: Convert a list of English phrases into variable names for your code instantly.
How to Use
- Type or paste your text into the large box above.
- Click on the button corresponding to the format you want (e.g., "UPPER CASE").
- The text will transform instantly.
- Click "Copy" to save it to your clipboard or "Download" to save it as a text file.