Sentence Case Converter Text
Capitalize the first letter of every sentence and lowercase the rest.
Sentence Case Converter is a free online tool that capitalize the first letter of every sentence and lowercase the rest. It runs entirely in your web browser using plain JavaScript, so files are processed on your own device and never uploaded to a server. There is no sign-up, no file size limit imposed by the site, no watermark and no paid tier.
- Price
- Free — no account, no quota, no watermark
- Category
- Text
- Where it runs
- In your browser, on your device
- Files uploaded
- None
- Technology
- plain JavaScript
- Settings
- None — it just works
- Works offline
- Yes, after the first visit
About Sentence Case Converter
Sentence case capitalizes the first letter after each terminator and lowercases the rest, which is the trap: proper nouns lose their capitals too. "I visited Paris in March" becomes "I visited paris in march". That is correct behavior for fixing SHOUTED text and wrong for prose you care about, so read the result rather than trusting it.
How to use it
- Paste the text you want to run through sentence case converter.
- There is nothing to configure — the result updates as you type.
Under the hood
| Runs on | plain JavaScript — runs the whole thing |
Questions
Does it handle abbreviations?
Not perfectly, and nothing can without understanding the text. A full stop in "Dr. Smith" or "e.g." looks exactly like a sentence end to any rule-based converter. Expect to fix those by hand.
What counts as a sentence boundary?
A full stop, question mark or exclamation mark followed by whitespace. Newlines also start a new sentence, which is what you want for lists and headings.