Uppercase converter
Convert English lowercase letters to uppercase while preserving other characters.
Runs in your browserEvery computation happens in your browser — your data never leaves this device.
English text
Converted result
Only English letters are converted.
Enter text to convert
Letters changed: 0
What this tool does
- Normalize English text.
- Process copied headings.
- Convert letter case locally.
Example
Input
Hello, world!
Output
HELLO, WORLD!
Only a-z are changed; digits, punctuation and other scripts are preserved.
Frequently asked questions
Does Chinese change?
No.
Do numbers change?
No.
Is empty input supported?
Yes.
Keywords：大写uppercaseEnglishtextlocal