Case Converter
Switch between text cases.
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Quick Tip
Paste or type the text you want to change.
About This Tool
Why use Case Converter?
Convert text between UPPERCASE, lowercase, Title Case and Sentence case in one click. The text stays in the box between conversions, so you can try one, change your mind and try another without pasting it again.
Sentence case is the one worth calling out: it lowercases everything, then capitalises the first letter of the text and the first letter after each full stop, question mark or exclamation mark. That is what fixes a block of text that arrived in capitals — a form submission, a paste from a PDF, a line someone typed with caps lock on — without you retyping any of it.
Key Benefits
Four cases
Upper, lower, title and sentence case, which covers subject lines, headings, body copy and shouted text alike.
Sentence detection
Sentence case capitalises after full stops, question marks and exclamation marks, not just at the very start.
Non-destructive
Converting again works on what is in the box, so you can switch between cases until one looks right.
How to use Case Converter
- 1
Paste or type the text you want to change.
- 2
Click UPPERCASE, lowercase, Title Case or Sentence case.
- 3
Try a different case if the first is not right — the text stays put.
- 4
Copy the result in one click.
Best use cases
Fix a subject line or a heading typed in all capitals.
Clean up a form submission or a paste from a PDF.
Normalise a column of names or headings.
Switch a headline between title case and sentence case for a house style.
Case Converter FAQs
What does Sentence case do exactly?
It lowercases everything, then capitalises the first letter of the text and the first letter after each full stop, question mark or exclamation mark.
Does Title Case follow a style guide?
It capitalises the first letter of every word. Style guides such as AP and Chicago leave short words like of, and and the in lowercase, so check the result against your house style.
Can I undo a conversion?
Converting again applies to the current text. Going from uppercase back to the original mixed case is not possible, because that information is gone — keep a copy if you need it.
Is my text sent anywhere?
No. The conversion happens in the page, so nothing is transmitted.
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