Turn plain text into snake_case names for columns, variables and files — the whole list in one click.
The example below is already loaded, so you can see exactly what you get. Replace it with your own list and the result updates as you type.
Got a bigger job? The full Notepad runs the same engine on lists of any size — chain this with dedupe, sort and filter, undo any step, and save the whole routine as a recipe for next time.
Running Shoes Guiderunning_shoes_guideConverts each line into snake_case.
Yes. Convert to snake_case runs entirely in your browser below, with no sign-up, no limits, and nothing sent to a server.
Yes, existing separators are treated the same as spaces or hyphens.
The snake_case Converter is one of the free tools inside Seowolf’s Notepad. Paste a list once, then dedupe, filter, sort, compare and format it in seconds — every step undoable, nothing uploaded, no account.
Open the Notepad — it’s free