Case Shifter
Convert between many identifier and text case styles — free, instant.
How to Use the Case Shifter
- Enter Variable String: Paste a variable name, function name, or identifier string.
- Select Target Format: Click camelCase, snake_case, kebab-case, or PascalCase.
- Copy Converted Name: Copy the properly formatted identifier for your codebase.
Why Use This Tool
Converting between camelCase, snake_case, kebab-case, and PascalCase naming conventions is a routine developer task when working across languages or frameworks with different style guides. This naming convention converter handles all four common formats instantly in the browser. It saves the manual, error-prone work of retyping an identifier by hand in a different style guide format.
How It Works
This case-style transformer and variable-name-formatter first splits your input into individual words by detecting camelCase boundaries and existing underscores or hyphens, then rejoins those words according to your chosen target format. It's a free, instant, local alternative to a manual find-and-replace approach for renaming identifiers consistently.
Key Features
The multi-format identifier converter supports all four major naming conventions used across popular programming languages — camelCase (common in JavaScript), snake_case (common in Python), kebab-case (common in URLs and CSS classes), and PascalCase (common in C# and class names). Converting is instant with a single button click for each target format. All four conversions are available from the same input, so you can quickly compare how one identifier looks across every common style. Beyond camelCase, snake_case, kebab-case, and PascalCase, you can now also convert to CONSTANT_CASE, dot.case, Title Case, and Sentence case, plus copy the result or reset the tool with one click.
Common Use Cases
Developers migrating a codebase between languages convert variable names to match the target language's naming convention. Frontend developers convert a database's snake_case column names into camelCase for JavaScript object properties. API developers convert a resource name into kebab-case for a clean URL path, and developers renaming a class quickly generate the PascalCase version of a lowercase name. Full-stack developers convert database column names into the correct format expected by their frontend framework.
Tips for Best Results
Always double-check the converted name doesn't accidentally clash with an existing reserved word or variable already used elsewhere in your codebase. When converting from camelCase to snake_case, watch for consecutive capital letters (like an acronym) which can sometimes split unexpectedly. Testing each conversion against a couple of real identifiers from your own project first can help confirm the tool handles your specific naming patterns as expected.
A Quick Note
Formatting and naming convention tasks may seem minor individually, but they add up to meaningful time savings across a developer regular workflow when handled with a fast, reliable browser tool instead of manual editing.
Privacy & Security
Because ToolNest processes everything entirely within your browser using client-side JavaScript, your files never leave your device. There is no server-side storage, no third-party analytics attached to your data, and no risk of a breach exposing files you processed months ago.
How do I convert a variable name from camelCase to snake_case?
Paste the camelCase name into the input field and click the snake_case button to instantly convert it.
What's the difference between kebab-case and snake_case?
Kebab-case uses hyphens between words (my-variable-name) while snake_case uses underscores (my_variable_name).
Which naming convention is used in Python versus JavaScript?
Python typically uses snake_case for variables and functions, while JavaScript conventionally uses camelCase.
Does the converter handle acronyms in variable names correctly?
Standard word-boundary detection is used, so unusual acronym patterns within a name may not always split as expected.