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CONSTANT_CASE Converter

Convert any text into CONSTANT_CASE for environment variables and enums.

Quick answer

Convert any text into CONSTANT_CASE for environment variables and enums.

How do I use the CONSTANT_CASE Converter?

  1. 1

    Paste your text.

  2. 2

    See CONSTANT_CASE output.

  3. 3

    Copy into your .env or enum.

What is the CONSTANT_CASE Converter?

The CONSTANT_CASE Converter turns any text into UPPERCASE words joined by underscores. Perfect for environment variables, enum members and configuration constants.

Who is the CONSTANT_CASE Converter for?

DevOps engineers, back-end developers, and configuration authors.

Why use the CONSTANT_CASE Converter?

  • Uppercase enforced.
  • Handles mixed input.
  • Instant preview.
  • Copy-ready.
  • Runs offline.

When should I use the CONSTANT_CASE Converter?

  • Writing .env files.
  • Defining enum members.
  • Naming feature flags.
  • Config constants.
  • Test data placeholders.

Is the CONSTANT_CASE Converter safe and private?

Yes. This tool runs entirely inside your browser - your text is never uploaded, stored on our servers or shared with third parties. You can even disconnect from the internet after the page loads and it will keep working. That makes it safe for confidential notes, drafts, private messages and unpublished work.

How do I get the best results from the CONSTANT_CASE Converter?

  • Pair with Snake Case for lowercase variants.
  • Trim symbols before conversion.
  • Avoid reserved shell names like PATH.
  • Prefix flags to avoid collisions (APP_, FEATURE_).

Frequently asked questions

What is CONSTANT_CASE?

It's uppercase snake_case - 'hello world' becomes 'HELLO_WORLD'. Common for env vars and enum members.

Does it split camelHumps?

Yes - mixed input is normalised first.

Is my text uploaded?

No - conversion is local.

Are numbers preserved?

Yes - digits stay attached to their word.

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