What Is a Text Case Converter?

A text case converter is a tool that changes the capitalization of text. Whether you need to shout in UPPERCASE, whisper in lowercase, format a title in Title Case, or generate a variable name in camelCase, this tool does it instantly — no manual retyping needed.

How to Use This Tool

Type or paste your text into the input box.
Click any case button above — the converted output appears instantly in the second box.
Copy the result with the Copy button, or download it as a .txt file.
Chain conversions by clicking "Use as Input" to apply multiple cases in sequence.

All Supported Cases

UPPERCASE

All letters capitalised. HELLO WORLD. Useful for headings, warnings, or stylised text.

lowercase

All letters lowercase. hello world. Common for URLs, tags, and casual writing.

Title Case

Major words capitalised, small words (of, the, and) kept lowercase. Hello World. Standard for book, article, and movie titles.

Sentence case

First letter of each sentence capitalised. Hello world. This is a sentence. Standard for paragraphs and body text.

Capitalized Case

Every word's first letter capitalised. Hello World. Useful for names, headers, and labels.

aLtErNaTiNg cAsE

Alternating upper and lower letters. hElLo WoRlD. Used for memes, sarcasm, or stylised posts.

iNVERSE cASE

Swaps the case of every letter. hELLO wORLD. Useful for stylised effects and encoding puzzles.

camelCase

First word lowercase, subsequent words capitalised, no spaces. helloWorld. Standard for JavaScript, Java variables.

PascalCase

Every word capitalised, no spaces. HelloWorld. Standard for C#, classes, and React components.

snake_case

Words lowercase, separated by underscores. hello_world. Standard for Python, Ruby, and database columns.

kebab-case

Words lowercase, separated by hyphens. hello-world. Standard for URLs, CSS classes, and HTML attributes.

CONSTANT_CASE

All uppercase with underscores. HELLO_WORLD. Standard for constants in most languages.

Who Uses a Text Case Converter?

Writers & editors — for fixing titles, headings, and inconsistent capitalization.
Developers — for converting between camelCase, snake_case, PascalCase, and CONSTANT_CASE.
Students — for formatting essays, references, and citations correctly.
Marketers — for creating ad copy, headlines, and CTA buttons that pop.
Designers — for generating clean CSS class names and file names.
Anyone — who has accidentally typed with Caps Lock on and doesn't want to retype everything.

Privacy Note

All conversion happens in your browser using JavaScript. Your text is never sent to a server, never stored, and never shared. Close the tab and it's gone.