CONSTANT_CASE Converter

The free CONSTANT_CASE converter turns any text into CONSTANT_CASE in one click —hello world becomes HELLO_WORLD. Every letter becomes uppercase and words join with underscores, so you can also convertsnake_case,UPPERCASE, orcamelCase names into constants.

Open the CONSTANT_CASE tool, paste your text, and press Convert (Ctrl+Enter).

How to convert text to CONSTANT_CASE

1. Paste your text into the online case converter.
2. Select CONSTANT_CASE from the sidebar.
3. Click Convert, then copy or download the result.

When to use CONSTANT_CASE

• Constants: MAX_RETRIES, DEFAULT_TIMEOUT, config values.
• Environment variables: API_BASE_URL, DATABASE_HOST.
• Enum members: fixed option sets in any language.

Frequently asked questions

How do I convert text to CONSTANT_CASE?

Paste text into the homepage tool, choose CONSTANT_CASE, and click Convert.

When should I use CONSTANT_CASE?

Constants, environment variables, and configuration keys.

What is the difference between CONSTANT_CASE and snake_case?

CONSTANT_CASE is uppercase (HELLO_WORLD); snake_case is lowercase (hello_world).

Is the CONSTANT_CASE converter free?

Yes — free, unlimited, and private with in-browser processing.

Related converters:case converter ·snake_case converter ·upper case converter ·PascalCase converter ·camel case converter ·kebab-case converter