Text Case Converter
Convert text to UPPERCASE, lowercase, Title Case, camelCase, snake_case, kebab-case, and more. 10 case formats supported.
Convert to:
0 chars0 words0 lines
Converted text will appear here…Naming conventions by language
| Convention | Example | Used in |
|---|---|---|
| camelCase | getUserById | JavaScript/TypeScript variables & functions |
| PascalCase | UserProfile | Classes, React components, TypeScript types |
| snake_case | user_id, get_user | Python, Ruby, PostgreSQL, Rust |
| kebab-case | user-profile, my-component | URLs, CSS classes, HTML attributes, file names |
| CONSTANT_CASE | MAX_RETRIES, API_KEY | Constants in most languages |
| dot.case | user.profile.id | Config keys, logging namespaces |
| UPPERCASE | HTTP, SQL | Acronyms, SQL keywords |
Converting cases in code
// JavaScript — camelCase to snake_case
const toSnake = s => s.replace(/[A-Z]/g, c => '_' + c.toLowerCase());
toSnake("getUserById"); // → "get_user_by_id"
// snake_case to camelCase
const toCamel = s => s.replace(/_([a-z])/g, (_, c) => c.toUpperCase());
toCamel("get_user_by_id"); // → "getUserById"
// Python (built-in via re)
import re
def to_snake(s):
return re.sub(r'([A-Z])', r'_\1', s).lower().lstrip('_')
// CSS: always use kebab-case
.user-profile { } /* correct */
.userProfile { } /* avoid */Related Tools
Frequently Asked Questions
What case formats are supported?
UPPERCASE, lowercase, Title Case, Sentence case, camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE, and dot.case — 10 formats total.
What is camelCase vs PascalCase?
camelCase starts with a lowercase letter (e.g., myVariableName). PascalCase starts with an uppercase letter (e.g., MyVariableName). Both are commonly used in programming.
When should I use snake_case vs kebab-case?
snake_case is common in Python, Ruby, and databases. kebab-case is common in URLs, CSS, and HTML attributes. Both separate words but with different characters.
Does this tool handle special characters?
Yes. The converter intelligently splits text on spaces, hyphens, underscores, and camelCase boundaries to convert between any format accurately.