Sentence Case Converter Online Free — Capitalize Sentences
Convert text to sentence case — first letter capitalised, rest lowercase.
What is Sentence Case Converter?
Converts your text to sentence case: the first letter of each sentence is capitalised and all other letters are lowercased. Detects sentence boundaries at periods, exclamation marks, and question marks.
Common Use Cases
Fixing text accidentally typed in ALL CAPS, normalising copied content, formatting social media posts, and correcting mixed-case text pasted from PDFs.
How It Works
Splits text into sentences at punctuation boundaries, capitalises the first alphabetic character of each sentence, and lowercases the rest.
Frequently Asked Questions
How is sentence case different from title case?
Sentence case capitalises only the first word of each sentence. Title case capitalises the first letter of most words.
Does it preserve proper nouns?
Not automatically — it lowercases all letters except the first of each sentence. Review output to re-capitalise proper nouns.
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