Sentence case is the normal capitalization style of everyday writing: the first word of each sentence is capitalized and everything else is lowercase, aside from proper nouns you'd capitalize manually. It's the fix you reach for when text arrives shouting in ALL CAPS from a form field, or with random capitalization from a sticky Caps Lock key. This tool lowercases the entire text first, then capitalizes the very first letter and the first letter following any sentence-ending punctuation (. ! ?), giving you clean, standard sentence formatting in one pass.
No — sentence case only capitalizes the first letter of each sentence. Proper nouns like names or place names (e.g., "Paris" or "John") will come out lowercase unless you capitalize them manually afterward.
A period, exclamation mark or question mark followed by whitespace and a letter is treated as the start of a new sentence, and that letter is capitalized.
Title Case capitalizes most words in a heading or title, while Sentence case only capitalizes the first word of each sentence — the style you'd normally use for regular body text and paragraphs.
Text typed in capitals, or with capitals scattered at random, is rewritten so each sentence starts with a capital and the rest is lowercase. Sentences are detected from periods, question marks and exclamation marks.
It rescues text typed with caps lock on, subtitles and transcripts that arrive in capitals, and headings that were copied in a different style. It's also what you want for the body text of an article, while headlines belong in Title Case.
Because everything else is lowercased, names and acronyms inside a sentence will lose their capitals. Fix those by hand, or after conversion use Find and Replace for the usual suspects.
hELLO there. THIS is a TEST. what now?
Hello there. This is a test. What now?
Proper nouns, "I" and acronyms like NASA need their capitals put back after conversion.