Case Converter — camelCase, snake_case, kebab-case & More

REST APIs documented in snake_case feed React apps expecting camelCase. GraphQL often uses camelCase fields while Postgres columns stay snake_case. Manual renaming invites typos — automated case transform on paste accelerates glue code.

Design systems export Figma tokens in kebab-case CSS variables while TypeScript enums want PascalCase. One source phrase mapped to all targets keeps design and engineering aligned.

camelCase lowercases the first segment and uppercases the first letter of each following word boundary — userProfileId. Common in JavaScript, Java fields, and JSON serializers in many stacks.

PascalCase uppercases every segment start — UserProfileId — for class names, React components, and .NET types. Our converter detects word boundaries from spaces, underscores, hyphens, and interior capitals.

snake_case joins lowercase words with underscores — user_profile_id — standard in Python, Ruby, SQL columns, and OpenAPI examples targeting Python backends.

SCREAMING_SNAKE_CASE uppercases every segment for constants and environment variables — MAX_RETRY_COUNT. Paste mixed case source and copy the constant form for .env templates.

kebab-case hyphenates lowercase segments — user-profile-id — common in HTML data attributes, URL paths, and CSS custom properties. Distinct from snake_case by separator character only — semantics differ by ecosystem.

Slug generator optimizes for URL safety; case converter produces kebab identifiers that may still need slug-generator for accent stripping.

Title Case capitalizes major words for headings and documentation — User Profile Settings. lowercase flattens everything for normalization before other transforms or CSS class prefixes.

Marketing Title Case rules vary; our implementation follows practical heading capitalization for tech docs.

Inputs like getHTTPResponse split on capital transitions, underscores, hyphens, and spaces. Irregular acronyms may split incorrectly — edit source to use delimiters when HTTP should stay one token.

Numbers within identifiers attach to adjacent segments per common camelCase rules.

Paste OpenAPI property list, convert snake to camel for TypeScript interfaces, screaming snake for env var names mapping to the same backend fields.

ORM column rename migrations: convert new camelCase model fields to snake_case SQL in one click per column.

Internal codenames in identifiers never upload. Suitable for paste from private repos during local development.

Clear after use on pair-programming screens showing sensitive project names.

Slug generator produces URL slugs with accent removal and length limits. Case converter produces developer identifiers — chain both when a headline becomes URL and variable names.

Regex tester validates patterns matching camelCase fields in logs — convert sample keys here to build alternation lists.

Document chosen convention in style guides — convert at system boundaries only, not randomly mid-codebase. ESLint and RuboCop enforce locally; this page helps at integration seams.

When converting entire JSON key sets, pretty-print keys first with json-formatter-validator then convert key-by-key or use batch scripts for large objects.