snake_case Converter Text
Turn any phrase into snake_case for databases and Python.
snake_case Converter is a free online tool that turn any phrase into snake_case for databases and Python. It runs entirely in your web browser using plain JavaScript, so files are processed on your own device and never uploaded to a server. There is no sign-up, no file size limit imposed by the site, no watermark and no paid tier.
- Price
- Free — no account, no quota, no watermark
- Category
- Text
- Where it runs
- In your browser, on your device
- Files uploaded
- None
- Technology
- plain JavaScript
- Settings
- None — it just works
- Works offline
- Yes, after the first visit
About snake_case Converter
snake_case joins lowercase words with underscores. It is the standard in Python (PEP 8), Ruby, Rust and C, and the default for SQL column names — which is why data pipelines so often need to convert between it and the camelCase their API layer speaks. Underscores survive being copy-pasted into places where hyphens would be interpreted as minus signs.
How to use it
- Paste the text you want to run through snake_case converter.
- There is nothing to configure — the result updates as you type.
Under the hood
| Runs on | plain JavaScript — runs the whole thing |
Questions
Why do databases prefer snake_case?
SQL identifiers are case-insensitive unless quoted, so `userId` and `userid` are the same column. Underscores make word boundaries survive that folding, which capitals do not.
What is SCREAMING_SNAKE_CASE?
The same thing in capitals, used for constants in almost every language. Use the CONSTANT_CASE converter for that.