Case converter

How it works

The converter applies one string transform per case, in this tab, on every keystroke. Upper and lower case use the browser's own Unicode-aware mapping, so accented letters change with their plain counterparts. Title case capitalises the first letter of every run of letters and digits and lowercases the rest. Sentence case lowercases everything, then restores capitals after . ! ? and at the start of the text. The programming styles first split the text on anything that is not a letter or a digit: camelCase joins the parts with the first lower and later parts capitalised, snake_case and kebab-case join them in lower case with an underscore or a hyphen. Splitting on non-alphanumerics means punctuation and spaces are removed in those four modes — that is what makes an identifier, not a sentence.

Worked example

For stacklane tools 2024 the modes give: UPPER CASE → STACKLANE TOOLS 2024; title case → Stacklane Tools 2024; camelCase → stacklaneTools2024; snake_case → stacklane_tools_2024; kebab-case → stacklane-tools-2024. Notice the digits stay lowercase in camelCase because only the first letter of each part is capitalised, and a part that starts with digits gains no capital at all.

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