CONSTANT_CASE Converter
Convert text into CONSTANT_CASE for environment variables, enum values, feature flags, and shared constants.
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About CONSTANT_CASE Converter
CONSTANT_CASE uppercases words and joins them with underscores. It is common for environment variables, enum members, compile-time constants, and feature flags.
Unicode vs HTML formatting
CONSTANT_CASE is the uppercase version of snake_case. Use it when the value is intended to be visually distinct from local variables.
Platform compatibility
Use CONSTANT_CASE for .env keys, CI variables, enum values, build flags, and public constants in many codebases. Avoid it for long prose or regular object fields.
How to Use CONSTANT_CASE Converter
1. Paste a variable, label, or setting name.
2. Review the uppercase underscore-separated result.
3. Copy it into an env file, config schema, enum, or docs page.
Examples
- max retry count → MAX_RETRY_COUNT
- api base url → API_BASE_URL
- feature checkout v2 → FEATURE_CHECKOUT_V2
When to Use CONSTANT_CASE Converter
Configuration Name environment variables and secrets.
Enums Format stable members in generated code.
Feature flags Keep flag names obvious in dashboards and logs.
Why Use This CONSTANT_CASE Converter?
The loud uppercase shape makes constants easy to spot and keeps config naming consistent across teams.
Frequently asked questions
CONSTANT_CASE vs UPPERCASE?
UPPERCASE changes letters only. CONSTANT_CASE also adds underscores between words.
Should all constants use CONSTANT_CASE?
Follow your language and team style guide. Some projects reserve it for env vars and module-level constants.
Can I convert camelCase to CONSTANT_CASE?
Yes. The converter detects common camelCase word boundaries before joining words with underscores.