Case Converter
Free case converter: change text to UPPERCASE, lowercase, Title Case, Sentence case, camelCase, snake_case, kebab-case and more, privately in your browser.
How to use Case Converter
- 1Paste or type your text, or open a .txt file.
- 2Click the case you want, for example Sentence case or snake_case.
- 3Copy the result or download it as a text file.
What makes it better
- 13 conversions in one place, including camelCase and snake_case
- Programming cases are applied line by line
- Works with accented letters and mixed scripts
- Live result with copy and download
About Case Converter
Case Converter changes the capitalization of your text with one click: UPPERCASE, lowercase, Title Case, Sentence case, the programming cases (camelCase, PascalCase, snake_case, CONSTANT_CASE, kebab-case, dot.case) and playful alternating or inverse case. The result updates as you type, and scripts without upper and lower case, such as Hindi or Tamil, are left untouched.
Common uses
- Fix text that was typed with Caps Lock on.
- Turn a heading into a URL-friendly kebab-case slug or a snake_case variable name.
- Convert a pasted list of names to Title Case or Sentence case.
- Make constant names such as MAX_RETRY_COUNT from plain phrases.
Example
Input
hELLO wORLD. this is a MIXED case sentence
Result
Hello world. This is a mixed case sentence
Good to know
- Sentence case capitalizes the first letter after each full stop, question mark or exclamation mark and after line breaks. It cannot know which words are proper nouns, so names are lowercased.
- Title Case here uses the AP style with small words kept lowercase. For APA, Chicago or MLA, use the Title Case Converter.
- Languages without letter case, including Devanagari, Tamil, Arabic and Chinese, pass through unchanged, while any Latin or Greek letters in the same text are converted.
Case Converter FAQ
What is the difference between Title Case and Capitalized Each Word?
Title Case keeps small words like “of”, “the” and “and” in lowercase unless they come first or last, while Capitalized Each Word capitalizes every word, so “Lord of the Rings” becomes “Lord Of The Rings”.
How do I convert text to camelCase or snake_case?
Choose camelCase or snake_case. The tool splits your text on spaces, punctuation and existing camelCase boundaries, so “user first-name” becomes userFirstName or user_first_name. Each line is converted separately.
Does it work with Hindi, Tamil or other Indian languages?
Yes, safely. These scripts have no upper or lower case, so the characters stay exactly as typed, and Latin words mixed in with them are converted normally.
What does inverse case do?
It swaps every letter: capitals become lowercase and lowercase becomes capitals, so “Hello” turns into “hELLO”. Alternating case instead switches letter by letter, starting with lowercase.
Is my text sent anywhere?
No. All conversions run in your browser, so what you paste stays on your device and is never uploaded.