Free snake_case Converter – Convert Text to snake_case
Published 2026-01-16 · convertcase.in
snake_case separates words with underscores and uses all lowercase. It is the standard naming convention in Python and is common in database column names.
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1What is snake_case?
"user_profile_name", "get_all_records" — words are separated by underscores, all letters are lowercase.
2Where Is It Used?
Python variables and functions, database column names (SQL), file names (my_file.py), environment variables (in some systems), and Ruby on Rails.
3SCREAMING_SNAKE_CASE
The uppercase variant (USER_MAX_AGE) is used for constants in Python, C, and many other languages.
Frequently Asked Questions
Is snake_case used in JavaScript?
Rarely. JavaScript conventionally uses camelCase. snake_case is possible but not standard.
Is snake_case good for URLs?
Google recommends hyphens (kebab-case) over underscores for URLs. Use kebab-case for SEO-friendly URLs.