How to Convert Text Case: UPPER, lower, camelCase, and More

Case matters in programming, writing, and design. A variable named userProfile in camelCase will not work if you type user_profile. A blog title in ALL CAPS looks aggressive. A URL with spaces breaks. Converting between case formats is tedious to do manually, but a case converter handles all eight common formats instantly.

The 8 case formats

The ToolStand Case Converter supports: UPPER CASE (all capitals), lower case, Sentence case (first letter capitalized), Title Case (every major word capitalized), camelCase (first word lowercase, subsequent words capitalized), PascalCase (all words capitalized, also called UpperCamelCase), snake_case (lowercase with underscores), and kebab-case (lowercase with hyphens).

When to use each format

camelCase: JavaScript and Java variables and functions. PascalCase: C# and TypeScript class names. snake_case: Python variables, functions, and file names. kebab-case: CSS class names, URLs, and HTML file names. UPPER CASE: SQL keywords and constants in many languages. Title Case: Blog post titles, article headlines. Sentence case: Body text and paragraphs.

Bulk conversion workflow

Refactoring a codebase to standardize naming conventions? Paste 50 variable names, convert them all to snake_case or camelCase in one click. The converter handles multi-line input, so you can process an entire list at once rather than converting each item individually.

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