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Free CONSTANT_CASE Converter

Turn any phrase into SCREAMING_SNAKE_CAPS for environment variables, C/Java constants and configuration flags.

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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

    'api timeout', 'max retries' or 'debug mode enabled'.

  2. 2

    Get SCREAMING_SNAKE

    Words become uppercase and join with underscores, ready for any constants file.

  3. 3

    Copy into your env

    Ideal for .env files, #define macros, Java static finals and Rust consts.

Key features

InputOutput
api timeoutAPI_TIMEOUT
max retriesMAX_RETRIES
debug Mode EnabledDEBUG_MODE_ENABLED
db.connection.stringDB_CONNECTION_STRING — dots absorbed

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.

  • No uploads, no accounts, no sign-up
  • No cookies or tracking of your text
  • 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 — the only requests you will ever see are this page's own static files (HTML, CSS, JavaScript). Nothing you type is ever transmitted.

Frequently asked questions

Where is CONSTANT_CASE used?
Environment variables (.env), compile-time constants in C/C++/Java/Rust, and any value that shouldn't change at runtime.
Same as snake_case?
Structurally yes — underscores between words — but every letter is capitalized. Convert here when you need the shouting version.
Are digits supported?
Yes — they're preserved as their own segment (http 2 only → HTTP_2_ONLY).
Is my config uploaded?
Never — everything runs locally inside this browser tab.

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