Online String Case Converter
Free online case converter to transform text between camelCase, PascalCase, snake_case, UPPERCASE, lowercase, and Title Case.
helloWorldString
hello_world_string
hello-world-string
HelloWorldString
HELLO WORLD STRING
hello world string
Hello World String
HELLO_WORLD_STRING
About String Case Lab
String Case Lab is a free, instant developer utility designed to transform text between standard programming variable conventions. Convert code identifiers, database column names, and URL slugs securely within your browser.
camelCase
Capitalizes the first letter of each word except the first. Standard for JavaScript, TypeScript, and JSON keys.
PascalCase
Capitalizes the first letter of every word. Used for React component names, C# classes, and Java types.
snake_case
Replaces spaces with underscores in lowercase. Standard for Python variables, Rust identifiers, and SQL database columns.
kebab-case
Replaces spaces with hyphens in lowercase. Standard for URL web slugs, CSS class names, and HTML attributes.
CONSTANT_CASE
Converts text to uppercase with underscore separators. Standard for global constants and environment variables.
Title Case
Capitalizes the principal words in a title. Used for blog headlines, article titles, and UI menu items.