Sentence Case Converter
Capitalise only the first letter of each sentence — the natural way English is written. Free, no signup.
Scan to open on your phone
Point your phone camera at the code to open this tool.
Capitalise only the first letter of each sentence — the natural way English is written. Free, no signup.
How to use Sentence Case Converter
- Paste or type your contentThe result appears as you type — there is no submit button.
- Read and copy the resultThe output updates live and the copy button takes it in one click.
Worked example
- the quick brown fox jumps over the lazy dog. the cat sleeps.
- The quick brown fox jumps over the lazy dog. The cat sleeps.
Nothing you enter leaves your device
All of the work happens inside your browser. Whatever you type is never packaged up and sent to a server, and no request this page makes carries it.
That makes it safe for contract amounts, personal details and internal documents you would rather not hand to a third party — close the tab and it is gone.
What this tool does not do
Sentence Case Converter only does what a browser can do on its own — it talks to no backend service. So it keeps no history for you and syncs nothing across devices; if you need a record, copy or download the result.
It is also not a substitute for professional judgement. For legal, medical or tax decisions, treat the output as a starting point rather than a final answer.
Frequently Asked Questions
- What is sentence case?
- Only the first letter of each sentence is capitalised; everything else stays lowercase.
- How does it find sentence breaks?
- It looks for full stops, question marks and exclamation marks followed by a space.