Sentence Case Converter
Capitalize the first letter of every sentence and lowercase the rest - just the way editors expect. Perfect for fixing all-CAPS or all-lowercase blocks of writing.
Results update live as you type — no button needed. The Example button fills a sample input.
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Why use Sentence Case Converter?
Sentence-aware: first letter of each sentence is capitalized
Handles multiple sentences and line breaks correctly
Live preview as you type or paste
100% in-browser - your text never leaves the page
FAQ
What is sentence case?
Sentence case capitalizes only the first letter of each sentence (and proper nouns, which this tool leaves to you) and keeps the rest lowercase.
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