Sentence Case Converter
Convert text to sentence case — capitalize the first letter of each sentence.
Sentence case — capital letter at the start of each sentence, the rest lowercase — is how ordinary prose is written, but text arrives in every other case: SHOUTING all-caps, Title Case Headlines, or randomly mixed. Fixing it by hand across a paragraph is slow.
Paste your text and this tool converts it to sentence case: it lowercases everything, then capitalizes the first letter of each sentence, detecting sentence boundaries at periods, exclamation marks and question marks. It's the fix for pasted all-caps text and inconsistent capitalization.
How to use Sentence Case Converter
- 1
Paste or type your text
Enter the text you want to transform.
- 2
See the result
The output updates instantly as you type.
- 3
Copy the result
Use it wherever you need it.
Features
- Instant transformation
- Runs privately in your browser
- Handles Unicode text
Frequently asked questions
Common mistakes to avoid
- Expecting the change to be reversible when it isn't — keep your original text.
- Applying it to content where the original formatting was meaningful.
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