Uppercase (capital letters) is used for headings, acronyms, warnings and some forms that require block capitals. Retyping is slow and error-prone; this converter changes the case of any amount of text in one step.
How to use the Lowercase to Uppercase Converter
- Your text
- Convert to
Everything runs in your browser, so results appear instantly and nothing you type is sent to a server.
How it works
The text is processed letter by letter with your browser’s built-in Unicode case mapping. Title case keeps short words such as “of”, “and” and “the” in lowercase unless they start or end the title.
Formula
Each letter is mapped to its upper- or lower-case form using Unicode case rules, so accented letters (é → É) work too.Worked example
Inputs — Your text: make every letter of this sentence uppercase.; Convert to: UPPERCASE.
Results — Converted text = MAKE EVERY LETTER OF THIS SENTENCE UPPERCASE.; Characters = 45; Words = 7; Letters changed = 38.
Frequently asked questions
Does it work with accented letters?
Yes, letters such as é, ü and ñ are converted correctly.
What is sentence case?
Only the first letter of each sentence (and the word “I”) is capitalised.
Is my text stored?
No. The conversion happens in your browser.
What formula does the Lowercase to Uppercase Converter use?
Each letter is mapped to its upper- or lower-case form using Unicode case rules, so accented letters (é → É) work too.