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Case Converter

Free case converter: instantly change text to uppercase, lowercase, title case, sentence case, camelCase, snake_case, or kebab-case.

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Enter text and choose a style.

Deep dive guides

A LITTLE CONTEXT · 4 MIN READcamelCase vs snake_case vs kebab-case: Why Programmers Can't Agree

All 4 related guides

camelCase vs snake_case vs kebab-case: Why Programmers Can't Agree — Where each naming convention lives and why: what spaces, underscores, hyphens, and capital letters can legally do in code, CSS, and URLs.
Pig Latin and the Playful Side of Word Rules — Pig Latin as an algorithm: the first-vowel rule, consonant clusters like str, the way-vs-ay dialects, why decoding is ambiguous, and its grown-up cousins in code.
Writing Numbers in Words: The Chunk-by-Chunk Method — Split into three-digit chunks, spell each chunk, attach scale words — how any integer becomes its English name, quirks included.
Batch Case Conversion: One Rule, Every Line — How per-line case conversion works: seven target cases, what each transformation does to acronyms and separators, and why empty lines stay put.

How case converter works

This converter transforms text between seven common casing styles. UPPERCASE and lowercase are straightforward conversions. Title case capitalizes the first letter of each word. Sentence case capitalizes only the first letter after a full stop, exclamation, or question mark.

For developers, the converter also handles camelCase (removes non-alphanumeric characters and capitalizes each word after the first), snake_case (joins words with underscores, all lowercase), and kebab-case (joins words with hyphens, all lowercase). These are commonly used in programming for variable and file names.

All conversions happen instantly in your browser as you type. Paste any text, choose a style, and the result appears immediately. Nothing is uploaded; your text stays private.

Frequently asked questions

What is title case?

Title case capitalizes the first letter of every word and lowercases the rest. For example, hello world becomes Hello World. It is commonly used for headings and titles.

What is the difference between camelCase and PascalCase?

camelCase starts with a lowercase letter and capitalizes subsequent words (e.g. myVariableName). PascalCase capitalizes the first letter of every word (e.g. MyVariableName). This tool produces camelCase.

When should I use snake_case vs kebab-case?

snake_case uses underscores between words (my_variable_name) and is common in Python, Ruby, and databases. kebab-case uses hyphens (my-variable-name) and is common in URLs, CSS class names, and file names.

Is my text stored or sent anywhere?

No. All conversion happens locally in your browser. Your text is never uploaded or stored, so it is safe for sensitive content.

Case Converter

Deep dive guides

How case converter works

Frequently asked questions

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