Gate2Home · Text tools

Case Converter

Convert text to uppercase, lowercase, invert case or sentence case. Choose English, German or Turkish case rules.

Case rules

Your textOriginal

ResultReady to copy

Text stays in your browser

Your original text stays unchanged. Choose a case style to see the result.

Choose the case you need

UppercaseFor headings and labels.: Hello world → HELLO WORLD
LowercaseRemove unwanted capitals.: Hello World → hello world
Invert caseReverse a Caps Lock mix-up.: Hello World → hELLO wORLD
Sentence caseStart sentences with capitals.: HELLO. HOW ARE YOU? → Hello. How are you?

English, Turkish and German case rules

English is the default. English and German use the same mappings here; Turkish treats dotted and dotless I differently. Uppercase changes ß to SS, and lowercase gives ss rather than the original ß.

English and GermanUppercase: Straße → STRASSE
Turkish uppercase: i ı → İ I
Turkish lowercase: I İ → ı i

Does sentence case correct my writing?: No. It follows simple rules, without recognizing names or abbreviations, fixing grammar, or applying title case. NASA becomes Nasa, and 1) BUY becomes 1) buy. Check names and abbreviations yourself.
What stays unchanged?: Punctuation, spacing and line breaks stay in place. Scripts without letter case are unchanged. Your original text remains available above.