Convert any text to UPPERCASE instantly. Handles international characters, accented letters, and multi-line text. Useful for constants, headings, and database identifiers.
Key Features
Converts all letters to uppercase using Unicode-aware casing rules
Correctly handles accented letters (e.g. é → É, ñ → Ñ, ü → Ü)
Preserves numbers, punctuation, spaces, and line structure
One-click conversion with instant character and word counting
How to Use
Type or paste your text into the editor area.
Click "Convert to UPPERCASE" to transform the text.
Review the capitalized text in the output panel.
Click "Copy" to transfer the result to your clipboard.
Example
Sample input
Hello World
Sample output
HELLO WORLD
Edge Cases
Locale-sensitive letters (i/İ)
Mixed numbers and symbols unchanged
Empty input
Frequently Asked Questions
Does this converter support accented characters and non-English alphabets?
Yes. The converter uses Unicode casing algorithms, ensuring accented characters, Cyrillic, Greek, and other scripts capitalize accurately.
Are numbers and punctuation modified by uppercase conversion?
No. Numeric digits, symbols, and formatting punctuation remain unaltered.
Is there any limit to the amount of text I can capitalize?
Conversion runs on our server over HTTPS. Typical documents return quickly; very large inputs may hit size or timeout limits.
Privacy notice: when you run this tool, your input is sent over HTTPS to our server, processed in memory and returned. It is not stored or logged. Avoid pasting live secrets such as private keys or passwords.