CONSTANT_CASE to snake_case Converter
Converts identifiers from CONSTANT_CASE (e.g. USER_ACCOUNT_STATUS) to snake_case (e.g. user_account_status). Runs 100% in-browser with multi-line batch support.
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CONSTANT_CASE to snake_case Examples
| CONSTANT_CASE | snake_case |
|---|---|
| USER_ID | user_id |
| CREATED_AT | created_at |
| API_KEY_TOKEN | api_key_token |
| FIRST_NAME | first_name |
| ORDER_ITEM_COUNT | order_item_count |
| HTTP_RESPONSE_CODE | http_response_code |
| MAX_RETRY_ATTEMPTS | max_retry_attempts |
FAQ
What is the difference between CONSTANT_CASE and snake_case?
CONSTANT_CASE (All uppercase letters, separated by underscores `_`. Also known as SCREAMING_SNAKE_CASE.) is primarily used for Standard for global constants, environment variables (.env), and enum definitions across languages.. In contrast, snake_case (All words are lowercase, separated by underscores `_`.) is the standard for Standard for variables and functions in Python, Ruby, Rust, and SQL database column names..
Are multi-line inputs supported?
Yes. You can paste lists of variable names, database column names, or JSON keys separated by newlines to convert them all at once.
Is my code private?
Yes, 100% private. All conversions happen entirely in your local web browser using client-side JavaScript. No data is sent to any server.