What is UPPERCASE?
Uppercase conversion changes letter case directly and leaves punctuation, spacing, separators, digits, blank lines, and line breaks in place.
The converter runs entirely in your browser. Your input is not uploaded or stored, and Unicode characters remain Unicode rather than being transliterated.
How this conversion works
- Convert every cased letter to its Unicode uppercase equivalent.
- Do not tokenize the input or replace punctuation and separators.
- Preserve whitespace, digits, blank lines, and line boundaries exactly.
Uppercase Converter examples
InputOutput
Hello, world!HELLO, WORLD!api_key-2API_KEY-2Crème brûléeCRÈME BRÛLÉELine one
Line twoLINE ONE
LINE TWOCommon uses
- Headings and notices
- Normalizing codes for comparison
- Uppercase text that retains formatting
Uppercase Converter FAQ
Is UPPERCASE the same as CONSTANT_CASE?
No. Uppercase preserves spaces and punctuation; CONSTANT_CASE tokenizes words and joins them with underscores.
Are line breaks preserved?
Yes. The result keeps the original line breaks and blank lines.