Free snake_case Converter

🟢 Runs Locally — verified: your files are processed in this browser. No uploads.

Join words with underscores in lowercase — the naming style of Python variables, Ruby methods, SQL columns and config keys.

Word Counter

Runs entirely in your browser — paste text and watch the results update instantly. Nothing is uploaded.

100% Client-Side — Your text stays in your browser. Nothing is uploaded.

How to use this tool

  1. 1

    Paste your phrase

    'Total Price', 'userID field' or 'api-key-name' — casing and separators don't matter.

  2. 2

    Get lowercase snake

    Words become lowercase and join with single underscores.

  3. 3

    Copy into your code

    The identifier-safe result copies in one click.

Key features

InputOutput
Total Pricetotal_price
userID fielduser_id_field
api-key-nameapi_key_name — kebab converted
MAX CONNECTION RETRIESmax_connection_retries

Privacy: your text never leaves your browser

Every Toolflect Text Tool is 100% client-side. The moment you type or paste text, it is analyzed by JavaScript running inside this browser tab. Your text is never sent to our servers, never stored in a database, and never shared with any third party or AI service. Visit counting (see the note at the foot of this page) is separate from your text and never receives it.

  • No uploads, no accounts, no sign-up
  • Your text is processed locally in your browser and never stored.
  • Works offline once the page has loaded
  • Close the tab and your text is gone from memory

You can even verify it yourself: open your browser's developer tools, switch to the Network tab, and type into the tool — no request ever carries your text. You will also see the Google Analytics request that counts the visit; it carries a page view and never anything you typed, and no cookie or identifier is stored until you accept analytics.

Frequently asked questions

Does it produce SCREAMING_SNAKE too?
This page makes lowercase snake_case; use the CONSTANT_CASE variant when you need SCREAMING_SNAKE for environment variables or constants.
Are double underscores avoided?
Yes — words are rebuilt from stems, so consecutive separators collapse into single underscores.
Which languages prefer snake_case?
Python (PEP 8), Ruby methods, SQL column names, Rust variables and many config formats.
Does it work offline?
Yes — after the page loads, no connection is needed at all.

More free ToolFlect text tools

All free ToolFlect tools

Your text stays in your browser and is not uploaded. We use Google Analytics to count visits; until you choose it runs without cookies and stores nothing on your device. · Privacy Policy