Lowercase Converter

In short Converting to lowercase maps every capital to its small form and leaves everything else untouched. The most common reason to reach for it is a paragraph typed with Caps Lock on by accident, where the alternative is retyping it. The second is normalising data before comparison, because "Email@Example.com" and "email@example.com" are the same address and no string comparison knows that unless you lowercase both first. It is worth being clear about what lowercasing cannot do. It cannot restore the capitals that were meant to be there — once "I visited Paris in March" is lowercased, no tool can tell that Paris and March were proper nouns and "i" was the pronoun. If you need sentence case back, use the sentence case converter, which reconstructs the obvious capitals but will still miss names it does not recognise. The safe order is always to keep the original and lowercase a copy, rather than lowercasing in place and hoping to rebuild it afterwards.