Sentence Case Converter
Capitalize the first letter of each sentence and lowercase the rest.
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Convert text to sentence case
Paste text above and it is rewritten in sentence case: the first letter of every sentence is capitalized and everything else is lowercased. This is the quickest way to clean up text that was typed with caps lock on, pasted in all capitals, or copied with random capitalization. The conversion runs entirely in your browser, so your text stays private.
What counts as a new sentence?
A new sentence starts at the beginning of the text and after each period, question mark or exclamation mark. The first letter there is capitalized; the rest of the words are made lowercase.
Frequently asked questions
What is sentence case?
Sentence case capitalizes only the first letter of each sentence and the word I, leaving the rest in lowercase — the normal style for body text.
Will it fix names and proper nouns?
No. It cannot detect names, so proper nouns are lowercased like other words. Re-capitalize those by hand after converting.
Does it work offline?
Yes. Once the page loads everything runs in your browser, so it keeps working without a connection.