Case Converter

How to Use the Case Converter

1. Enter Text: Type or paste your text into the input area. All conversions update instantly as you type — no button click needed.
2. View All Cases: The grid below shows your text simultaneously converted to 14 different formats: lowercase, UPPERCASE, Title Case, Sentence case, camelCase, PascalCase, snake_case, SCREAMING_SNAKE, kebab-case, TRAIN-CASE, dot.case, path/case, aLtErNaTiNg, and Reverse.
3. Copy Any Format: Click the "Copy" button under any conversion to copy that specific format to your clipboard.
4. Paste from Clipboard: Click "Paste" to quickly insert text from your clipboard without right-clicking.

Technical Overview & Use Cases

This converter implements intelligent word boundary detection using regex patterns that handle camelCase splits (([a-z])([A-Z])), acronym boundaries (([A-Z]+)([A-Z][a-z])), and delimiter splitting (hyphens, underscores, dots, slashes). This means pasting "myVariableName" correctly splits into "my Variable Name" before applying the target case — unlike naive converters that only split on spaces. Each case transformation is a pure function applied to the tokenized word array.

Real-world use cases:

• Code refactoring: Convert between JavaScript camelCase variables, Python snake_case conventions, CSS kebab-case properties, and constant SCREAMING_SNAKE_CASE — essential when porting code between language ecosystems.
• API development: Transform JSON field names between different API naming conventions (e.g., converting a snake_case REST response to camelCase for a React frontend).
• Content formatting: Convert headlines to Title Case for blog posts, generate URL-friendly kebab-case slugs from article titles, or create path/case file structure names.

Privacy & Security Guarantee

This tool is part of the FAK LAB ecosystem, founded by Faizan Ahmad Khan Khichi. All text transformations happen 100% locally in your browser using JavaScript string methods. Your text — whether it's code, proprietary variable names, or business content — is never sent to any server. No clipboard data is logged, no input is stored, and no API calls are made during conversion.

Frequently Asked Questions

What is the difference between camelCase and PascalCase?

camelCase starts with a lowercase letter ("myVariable"), while PascalCase starts with uppercase ("MyVariable"). In JavaScript/TypeScript conventions: variables and functions use camelCase, classes and components use PascalCase. Both eliminate spaces by capitalizing word boundaries.

When should I use snake_case vs kebab-case?

snake_case uses underscores and is standard in Python, Ruby, SQL column names, and environment variables. kebab-case uses hyphens and is standard in CSS class names, URL slugs, HTML attributes, and CLI flags. Use whichever your ecosystem expects — consistency within a project matters more than the choice itself.

Can it detect the input case automatically?

Yes. The word splitter uses regex patterns to detect camelCase boundaries, PascalCase, snake_case delimiters, kebab-case hyphens, and plain spaces. You can paste "myVariable_name" and it correctly identifies 3 words ("my", "Variable", "name") regardless of the mixed input format.