Title Case capitalises the first letter of each major word. Minor words like 'a', 'an', 'the', 'and', 'but', 'or', 'for', 'in', 'on', 'at', 'to', 'by' are kept lowercase unless they are the first or last word.

camelCase joins words together with no spaces, making the first letter of each word (except the first) uppercase. For example: 'hello world' becomes 'helloWorld'. Used in JavaScript variable names, Java methods, and many programming contexts.

snake_case replaces spaces with underscores and makes all letters lowercase. For example: 'Hello World' becomes 'hello_world'. Widely used in Python variable names, database column names, and file naming conventions.

Case Converter — UPPERCASE, lowercase, Title Case & More

All case types explained

Case	Example	Common uses
UPPERCASE	`HELLO WORLD`	Headings, acronyms, emphasis, SQL keywords
lowercase	`hello world`	General text, email addresses, URLs
Title Case	`Hello World`	Book titles, article headings, proper nouns
Sentence case	`Hello world`	Normal prose, sentences, most body text
camelCase	`helloWorld`	JavaScript variables, Java methods, JSON keys
PascalCase	`HelloWorld`	Class names (all languages), C# methods, React components
snake_case	`hello_world`	Python variables, database columns, file names
SCREAMING_SNAKE	`HELLO_WORLD`	Constants in Python, C, Java, environment variables
kebab-case	`hello-world`	CSS class names, URL slugs, HTML attributes, filenames
dot.case	`hello.world`	Config keys, package names (npm, Java packages)
tOgGlE cAsE	`hElLo WoRlD`	Memes, mockery, emphasis in informal text
Alternate case	`HeLlO wOrLd`	Similar to toggle but starts with uppercase

Title Case rules

Title Case capitalises the first letter of each major word. The following short words stay lowercase when they appear in the middle of a title: a, an, the, and, but, or, for, nor, on, at, to, by, in, of, up, as. The first and last word of a title are always capitalised regardless of type.

Sentence case rules

Sentence case capitalises only the first letter of the first word in each sentence, and any proper nouns. All other words are lowercase. This is the standard format for body text in most writing contexts.

Programmer tip: camelCase, PascalCase, snake_case, and kebab-case all strip punctuation and join words. They're designed for identifiers (variable names, class names, URLs) rather than readable prose. Choose based on your language's convention — Python uses snake_case, JavaScript uses camelCase, CSS uses kebab-case.

Frequently asked questions

What is the difference between Title Case and Sentence case?

Title Case capitalises the first letter of every major word: "The Quick Brown Fox Jumps". Sentence case only capitalises the first word and proper nouns: "The quick brown fox jumps". Title Case is used for headings and titles; Sentence case is used for body text and most prose.

What is the difference between camelCase and PascalCase?

Both join words without spaces. camelCase starts with a lowercase letter: helloWorld. PascalCase starts with an uppercase letter: HelloWorld. In programming, camelCase is typically used for variables and functions; PascalCase is used for class names and types.

Does this case converter work for non-English text?

UPPERCASE and lowercase conversions use JavaScript's built-in toUpperCase() and toLowerCase() which handle most Unicode characters including accented letters (é → É, ü → Ü). Title Case and programming cases (camelCase, snake_case etc.) are optimised for English and Latin-script languages.

Is there a character limit?

No. Conversion happens entirely in your browser so there's no server limit. You can paste very large documents — tens of thousands of words — without any issues.

Does this tool save or transmit my text?

No. All conversion happens locally in your browser using JavaScript. Your text is never sent to any server and is not stored anywhere. Close the tab and it's gone.

Case Converter

All case types explained

Title Case rules

Sentence case rules

Frequently asked questions

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