Why Naming Conventions Matter
Different languages and frameworks have different conventions for variable names, function names, and file names. Following the right convention makes code readable and is a fundamental part of team collaboration. When switching projects, connecting APIs, or generating code, you frequently need to convert between naming formats quickly.
Common Naming Conventions Explained
| Format | Example | Common in |
|---|
| camelCase | myVariableName | JavaScript variables/functions, Java methods, JSON keys |
| PascalCase | MyVariableName | Class names (all languages), React components, C# methods |
| snake_case | my_variable_name | Python, Ruby, database column names, Rust |
| UPPER_SNAKE_CASE | MY_VARIABLE_NAME | Constants (Python, Java, C), environment variables |
| kebab-case | my-variable-name | HTML/CSS attributes, URL slugs, file names, Vue props |
| Title Case | My Variable Name | Headings, page titles, UI labels |
How to Convert Text Case Online
Use tool.tl's text case converter:
- Go to tool.tl/text-case
- Paste your text in any format
- Click the target format button (camelCase, snake_case, PascalCase, etc.)
- The converted result appears instantly — click to copy
How the Conversion Works
Most converters follow these steps:
- Tokenize: Split the input into words (recognizing spaces, hyphens, underscores, and uppercase boundaries)
- Normalize: Convert all tokens to lowercase
- Reassemble: Join with the target format's separator or capitalization rules
// JavaScript: snake_case → camelCase
const toCamel = s => s.replace(/_([a-z])/g, (_, c) => c.toUpperCase());
toCamel('my_variable_name'); // → 'myVariableName'
// JavaScript: camelCase → kebab-case
const toKebab = s => s.replace(/([A-Z])/g, '-$1').toLowerCase();
toKebab('myVariableName'); // → 'my-variable-name'
Real-World Use Cases
- API integration: Backend Python returns snake_case; frontend JavaScript needs camelCase — batch rename response properties
- Database to code: DB column names are typically snake_case; ORM model properties may be camelCase or PascalCase
- File naming: Convert component names from PascalCase to kebab-case filenames (
MyComponent → my-component.vue)
- URL slugs: Convert article titles to kebab-case slugs for SEO-friendly URLs
Frequently Asked Questions
kebab-case or snake_case for URLs?
Use kebab-case for URLs. Google recommends hyphens over underscores as word separators in URLs — underscores are not treated as word boundaries by Google's crawler. Hyphens are also more readable in link text where underscores can be hidden by underline styling.
Is there a universal Title Case standard?
No universal standard. The most common rule capitalizes all words, with some styles keeping short prepositions (a/an/the/in/on/at/of) lowercase. Different style guides (APA, Chicago, AP) have slightly different rules. Most tools use the simple approach: capitalize every word's first letter.
Yes — tool.tl's text case converter is completely free, instant, and requires no account.