Text Case Conversion Explained (and When to Use Each Style)

camelCase, snake_case, and Title Case aren't interchangeable style preferences — each one is the expected convention in a specific context, and using the wrong one stands out immediately to anyone familiar with that context.

The Common Case Styles

Style	Example	Where It's Used
camelCase	firstName	JavaScript/Java variable names
snake_case	first_name	Python variables, database columns
PascalCase	FirstName	Class names in many languages
kebab-case	first-name	URLs, HTML/CSS attributes
Title Case	First Name	Headings, titles
Sentence case	First name	Regular prose

Why Programming Languages Care So Much

Convention, not preference: most programming style guides specify a case convention for variables, functions, and classes — following it isn't optional style, it's what makes code readable to other developers who expect that convention in that language.

Title Case Has Real Rules

Proper title case capitalizes major words but typically lowercases short articles, conjunctions, and prepositions ("a," "the," "and," "of") unless they're the first or last word — "The Lord of the Rings," not "The Lord Of The Rings." Getting this wrong is a common, noticeable mistake in headlines and titles.

Where Kebab-Case Matters

URLs and HTML attributes conventionally use kebab-case rather than camelCase or spaces — "my-page-title" rather than "myPageTitle" or "my page title," partly because spaces and certain characters aren't safe in URLs without encoding.

Step-by-Step: Convert Text Case

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Choose the target case style
Copy the converted result

Try It Yourself

Use our free Case Converter — camelCase, snake_case, Title Case and more

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