Swift String Case Conversion – Methods & Examples
Published 2026-01-30 · convertcase.in
Swift strings are Unicode-correct by default, making case conversion reliable across languages. Here are the built-in methods and custom solutions.
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1Swift Case Methods
"hello".uppercased() → "HELLO" "HELLO".lowercased() → "hello" "hello world".capitalized → "Hello World"
2Locale-Aware
"istanbul".uppercased(with: Locale(identifier: "tr_TR")) — correctly handles Turkish characters.
Frequently Asked Questions
Is Swift capitalized the same as title case?
capitalized capitalises every word. For strict title case (skipping minor words), you need a custom function.