About Sentence Capitalization
English grammar requires every sentence to begin with a capital letter. When you type quickly, paste text from another source, or transcribe speech, it is easy to end up with sentences that start in lowercase. This tool corrects that in one click.
Three rules are applied: the very first character of the text is capitalized; the first character of each new line is capitalized; and any lowercase letter that immediately follows a sentence-ending punctuation mark (period, exclamation mark, or question mark) plus whitespace is capitalized. Letters that are already uppercase are never changed.
Useful for fixing essays, email drafts, captions, social media posts, and any block of text that needs proper sentence case. Results update instantly as you type.
FAQ
No. Title case capitalizes the first letter of most words. This tool only capitalizes the first letter of each sentence — all other words keep their existing case.
Yes. Each line is treated independently, so the first letter of every line will be capitalized regardless of punctuation.