---
title: "Text Case Converter · Outil gratuit et anonyme · Laurens De Leeuw"
canonical: "https://laurensdeleeuw.be/fr/tools/text-case-converter"
markdown_alternate: "https://laurensdeleeuw.be/fr/tools/text-case-converter.md"
language: "fr-BE"
content_type: "interactive-tool"
robots: "noindex, follow"
---

# Text Case Converter

Convert any text to UPPERCASE, lowercase, Title Case, or Sentence case. Utilisation gratuite sans compte, adresse e-mail ni paiement. Le résultat est téléchargé immédiatement.

Convert any text to UPPERCASE, lowercase, Title Case, or Sentence case.

Paste text and pick the case you want. Works on a paragraph, a list, or a full document. Live preview shows the result before you download.

- **Category:** Text
- **Availability:** Free to use without an account, email address, subscription, or payment.
- **Input:** Entered in the browser

## How it works

1. Paste your text into the editor.
2. Pick the target case (UPPERCASE, lowercase, Title Case, or Sentence case).
3. Process and download the converted.txt file.

## Use cases

- Convert a YELLING email to Sentence case.
- Title-case a list of article headlines.
- Lowercase a stack of tags before importing into a CMS.
- Uppercase a list of country codes for a spreadsheet.

## Frequently asked questions

### Does Title Case understand small words?

Our Title Case capitalises the first letter of every word. For style-guide aware title casing (lowercasing 'of', 'and', etc.), edit the few exceptions manually after.

### What does Sentence case do?

It lowercases the entire text, then capitalises the first letter of each sentence (after a period, exclamation mark, or question mark).

### Are line breaks preserved?

Yes. Every line break and paragraph is kept exactly as you pasted it. Only the letters change case.

### Is there a size limit?

Up to 2 MB of text per job, which is hundreds of thousands of lines for typical content.

## Related tools

- [Text Cleaner](https://laurensdeleeuw.be/fr/tools/text-cleaner)
- [Remove Duplicate Lines](https://laurensdeleeuw.be/fr/tools/remove-duplicate-lines)
- [Find and Replace Text](https://laurensdeleeuw.be/fr/tools/find-and-replace-text)

## Using the interactive tool

Open the [canonical HTML page](https://laurensdeleeuw.be/fr/tools/text-case-converter) to provide input and generate or download a result. This Markdown alternate contains the complete descriptive and instructional content, but it does not execute the interactive interface.