The ConvertCasePro CONSTANT_CASE converter transforms any text — including camelCase, PascalCase, phrases with spaces, or hyphenated words — into proper CONSTANT_CASE. All letters become uppercase and word boundaries become underscores.
CONSTANT_CASE is a naming convention where all letters are uppercase and words are separated by underscores. It is the uppercase variant of snake_case. Examples: • Input: max retry count • Output: MAX_RETRY_COUNT • Input: databaseConnectionString • Output: DATABASE_CONNECTION_STRING Also known as SCREAMING_SNAKE_CASE or UPPER_SNAKE_CASE — the all-caps visual weight signals: this value is fixed and should not change.
The purpose of CONSTANT_CASE is intent communication — making constants visually distinct from variables at a glance. Without it: if (retries > maxRetries) — is maxRetries a parameter, a local variable, or a constant? With CONSTANT_CASE: if (retries > MAX_RETRIES) — immediately clear: MAX_RETRIES is a fixed value defined at a higher scope. This readability benefit is why CONSTANT_CASE spread to virtually every mainstream language despite rarely being enforced by compilers.
UPPERCASE converts all letters to capitals with no other changes — 'hello world' becomes 'HELLO WORLD'. CONSTANT_CASE replaces spaces and other separators with underscores — 'hello world' becomes 'HELLO_WORLD'.
Yes. Paste maxRetryCount and click CONSTANT_CASE — you get MAX_RETRY_COUNT. The converter splits on camelCase word boundaries.
Environment variables have used CONSTANT_CASE by convention since early Unix. The all-caps format makes them visually distinct from shell variables and program code, signaling that these are external configuration values.
Yes. CONSTANT_CASE, SCREAMING_SNAKE_CASE, and UPPER_SNAKE_CASE are all names for the same format: all uppercase letters with underscores separating words.