CamelCase Snake_case Converter

Tool Overview: CamelCase Snake_case Converter

What Is CamelCase Snake_case Converter?

CamelCase Snake_case Converter converts strings to camel/snake case for consistent naming.

How to Use

1. Paste the text or list.
2. Select camel/snake case as the output style.
3. Copy the converted result.

Common Use Cases

• Unify variable and function naming
• Convert API or DB field names
• Batch renaming tasks

❓ FAQ

Q1: Separators look wrong?
A: Check tokenization and input separators.

Q2: Batch conversion?
A: Use multiline input.

Q3: Keep numbers?
A: Numbers are preserved in output.

Tool Overview

The CamelCase Snake_case Converter is a professional naming convention converter that supports mutual conversion between camelCase and snake_case naming conventions.

Key Features

🔄 Bidirectional Conversion

• CamelCase to snake_case: Convert userName to user_name
• snake_case to camelCase: Convert user_name to userName

📝 Batch Processing

• Support multiple lines of text conversion simultaneously
• Automatically recognize empty lines and maintain formatting
• Suitable for processing large amounts of variable names

🔀 Smart Swap

• One-click swap of input and output content
• Convenient for reverse conversion operations

Conversion Rules

CamelCase to snake_case Rules

1. Consecutive uppercase letters: XMLHttpRequest → xml_http_request
2. Lowercase followed by uppercase: getUserInfo → get_user_info
3. Preserve existing underscores: Keep existing underscores unchanged
4. Convert to lowercase: Final result is all lowercase

snake_case to camelCase Rules

1. Capitalize after underscore: user_name → userName
2. Remove underscores: All underscores are removed
3. Lowercase first letter: Maintain camelCase convention

Use Cases

💻 Programming Development

• JavaScript/TypeScript: API response field conversion
• Python: Variable naming convention conversion
• Java: Property name format unification
• Go: Struct field conversion

🔗 API Development

• Frontend-backend data format unification
• Database field to code variable mapping
• Data exchange between different languages

📊 Data Processing

• JSON data format conversion
• Configuration file format adjustment
• Data import/export processing

Common Examples

Variable Name Conversion

Input: userName, firstName, lastName
Output: user_name, first_name, last_name

Function Name Conversion

Input: getUserInfo, createNewUser, deleteUserById
Output: get_user_info, create_new_user, delete_user_by_id

Complex Naming Conversion

Input: XMLHttpRequest, JSONParser, HTMLElement
Output: xml_http_request, json_parser, html_element

Important Notes

1. Maintain Semantics: Ensure variable names remain semantically clear after conversion
2. Team Standards: Follow project or team naming conventions
3. Consistency: Maintain consistent naming style within the same project
4. Readability: Prioritize code readability and maintainability

Technical Features

• ✅ Pure frontend processing, data security
• ✅ Real-time conversion, instant preview
• ✅ Batch operation support
• ✅ Smart rule recognition
• ✅ Cross-platform compatibility