# Lowercase to Uppercase Converter

URL: https://speedycalculator.com/calculators/conversion/lowercase-to-uppercase-converter/
Last updated: 2026-10-25

> The lowercase to uppercase converter changes the case of any text: UPPERCASE, lowercase, Title Case, Sentence case, aLtErNaTiNg or iNVERSE. Paste your text, pick the style and copy the result. Everything is calculated in your browser; nothing you type is sent to our server.

## Inputs

- Your text
- Convert to

## Results

- Converted text
- Characters
- Words
- Letters changed

## Formula

```
Each letter is mapped to its upper- or lower-case form using Unicode case rules, so accented letters (é → É) work too.
```

## Explanation

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.

## 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.

## FAQ

**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.