Text Case Converter – UPPERCASE, lowercase, Title Case Online
Text Case Converter is a free online tool that instantly converts any text between six formats: UPPERCASE, lowercase, Title Case, Sentence case, camelCase, and snake_case. It processes everything in your browser — no paste button, no submit, no server. The output updates in real time as you type.
Frequently Asked Questions
What is Title Case?
Title Case capitalises the first letter of every word in the text. For example, "the quick brown fox" becomes "The Quick Brown Fox". It is commonly used for headings, article titles, book titles, and product names.
What is Sentence case?
Sentence case capitalises only the first letter of each sentence, leaving all other words in lowercase (unless they are proper nouns). For example, "THE QUICK BROWN FOX. IT JUMPED." becomes "The quick brown fox. It jumped." This is the standard style for body text.
What is camelCase and when is it used?
camelCase removes spaces and capitalises the first letter of each word except the first. "hello world" becomes "helloWorld". It is the standard naming convention for variables, functions, and methods in JavaScript, TypeScript, Java, Swift, and many other programming languages.
What is snake_case?
snake_case replaces spaces with underscores and converts all characters to lowercase. "Hello World" becomes "hello_world". It is commonly used for variable names in Python, Ruby, and SQL, as well as for file names and database column names.
Does the converter work in real time?
Yes. As you type in the input area with a case button already selected, the output updates instantly on every keystroke. There is no need to click the button again after you have chosen a case style — just start typing.