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.
Example input
Try it with this sample — paste it into the box above:
the quick brown fox JUMPED over the lazy dog. time to eat, grandma!
How to use Sentence Case Converter
- Enter or paste your data into the Your input box above.
- The result appears instantly in the Result box — everything runs in your browser, nothing is uploaded.
- Use Copy or Download to keep the result, or Example to load a sample first.
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