Text Tools
Convert text into snake_case for variables, keys, and structured names.
Use this snake case converter to turn words and phrases into snake_case format for programming, database fields, config keys, and naming cleanup.
Use this snake case converter to turn words and phrases into snake_case format for programming, database fields, config keys, and naming cleanup.
Use snake case converter when you need a fast browser-based result without extra setup. It works well for quick checks, one-off tasks, and routine formatting or calculation work.
Read step-by-step usage guidance, best practices, and common mistakes.
See common questions and answers about input, output, and tool usage.
Review practical input and output examples before running the tool.
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Input
hello world example
Output
hello_world_example
Spaces are replaced with underscores and text becomes lowercase.
Input
user-profile name
Output
user_profile_name
Hyphens and spaces are normalized into underscores.
Fix: Use the related case converter that matches the exact output format you need.
Fix: Paste clean words or review the normalized output before using it in code.
Fix: Snake case is meant to normalize text into a clean identifier.
snake_case is a naming style where words are lowercase and separated with underscores.
Developers often use it for variables, fields, database columns, and configuration keys.
Yes. It replaces spaces and common separators with underscores.
Snake case uses underscores, while kebab case uses hyphens.
Yes. The tool cleans common separators and converts the result into snake_case.