Searching for a 驼峰命名 to 下划线命名 converter usually means you have messy text and need a dependable 下划线命名 version fast. Paste anything in the box above—sentences, product names, or variable fragments—and the result updates live. As a quick check, “Hello World Example” becomes “hello_world_example”.
Words are lowercase and separated by underscores (_).
Popular in Python, Ruby, and SQL column names. Teams often land here from 驼峰命名 searches when they already have a draft string and want reliable 下划线命名 output.
Suppose you are cleaning up copy before publish:
You get: hello_world_example — ready to copy into your doc, CMS, or codebase.
camelCase identifiers such as userProfileId.
Helpful reference when your source string already looks like 驼峰命名.
Produces snake_case tokens that fit Python and SQL conventions.
This page outputs 下划线命名 so you can paste into docs, UI, or repositories.
Will `userProfile` become `user_profile`?
Only if you separate words with spaces, hyphens, or underscores first (`user Profile` → `user_profile`). Mid-word capitals alone are not split.
Python from JavaScript field?
Paste `user profile` derived from camel by adding spaces, then snake_case here—or edit manually for precision.
Common misconception?
Automatic camelCase → snake_case needs word boundaries. This tool is honest about that limit.
Already `user_profile`?
Underscores stay; letters lower case.
Use this 驼峰命名 to 下划线命名 page when you want fast, readable 下划线命名 text without a spreadsheet formula or manual retyping. Bookmark it for the next time design, marketing, or engineering needs the same casing call.