InstantToolDeckSentence Case Converter
Paste text in all caps or all lowercase and get properly capitalized sentences.
Free · Runs in your browser · Your text is never uploaded
What sentence case does
Sentence case capitalizes the first letter after a period, question mark or exclamation mark, at the start of each line, and the standalone pronoun “I”, and lowercases the rest. It is ideal for rescuing text typed in caps lock or lowercase.
Proper nouns such as names and places will also be lowercased, so scan the result and capitalize them again. Many modern interfaces (including Google, GOV.UK and Apple documentation) use sentence case for headings because it is easier to read than title case.
Need more options? Open the full Case Converter.
Frequently asked questions
How do I convert text to sentence case?
Paste it above. The first letter of each sentence is capitalized and the rest is lowercased.
Why are names lowercase after converting?
The tool cannot know which words are proper nouns, so you need to recapitalize names and places.
Does it capitalize the word I?
Yes, a standalone “i” becomes “I”.
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