What's the difference between camelCase and PascalCase?

camelCase starts with a lowercase letter (userName), while PascalCase capitalizes the first letter too (UserName). camelCase is common for variables and function names, PascalCase for class and component names.

Can this tool convert code with existing camelCase back into snake_case?

Yes, the converter detects capital-letter boundaries in camelCase or PascalCase input and uses them as word breaks, so converting to snake_case or kebab-case works in both directions.

Does it handle full sentences or only short variable-style strings?

It works on full sentences too — spaces and punctuation are treated as word separators — but the practical use case is usually short strings like names, headers, and identifiers rather than paragraphs.

Will special characters like accented letters convert correctly?

Accented characters are generally preserved as-is rather than stripped or transliterated, so if you need a strictly ASCII slug-style output, pair this with a dedicated slug tool instead.

tools / text

Case Converter

Convert text to camelCase, snake_case, and more.

INPUT

REFERENCE

camelCasemyVariableNameJavaScript variables, object properties

PascalCaseMyClassNameClasses, React components, TypeScript types

snake_casemy_variable_namePython variables, database columns, Ruby

kebab-casemy-variable-nameCSS classes, HTML attributes, URL slugs

CONSTANT_CASEMY_CONSTANTConstants, environment variables

ABOUT THIS TOOL

Paste text and convert it to camelCase, PascalCase, snake_case, kebab-case, UPPERCASE, lowercase, or Title Case in one click. Developers use it when reformatting variable names or copying content between different coding conventions. It splits input on spaces, hyphens, underscores, and capital-letter boundaries, so you can feed it a phrase, an existing snake_case string, or a messy mix and get a clean result in the target format. This saves the manual retyping that happens when a database column named user_id needs to become userId in a JavaScript file, or when a CSS class needs to match a JSON key elsewhere in a project.

HOW TO USE

Paste the text, variable name, or phrase you want to convert
Choose the target case format from the available options
Review the converted output shown below the input
Click the copy button to grab the result
Repeat with a different case option if you need the same text in multiple formats

COMMON USE CASES

A developer renaming a REST API field from snake_case to camelCase for a JavaScript frontend
A programmer converting a spreadsheet column header into a valid Python variable name
A content editor turning a blog headline into Title Case for a CMS field
A designer converting a component name into kebab-case for a CSS class or file name
A database admin reformatting table names into consistent snake_case before a migration

TIPS & COMMON MISTAKES

Acronyms in the original text (like 'ID' or 'URL') may get split into separate letters when converted, so double-check camelCase and PascalCase output on strings containing acronyms
Numbers attached to words are kept in place but won't add extra separators, so 'step2' stays 'step2' rather than becoming 'step_2'
Title Case here capitalizes each word rather than applying formal style-guide rules about small words like 'a' or 'the', so proofread if you need publication-grade title casing
Converting already-mixed-case text (like MixedCASE) can produce unexpected splits — clean up obvious typos before converting for best results