Convertisseur de Base Numérique

Use the free online Convertisseur de Base Numérique tool. Fast, private and easy to use — runs entirely in your browser. Part of our Outils de Conversion Binaire collection.

Texte ↔ Binaire

Convert text to 8-bit binary and decode binary back to readable text instantly.

Texte ↔ ASCII

Turn each character into its ASCII (decimal) code and back. Useful for programming and debugging.

Texte ↔ HEX

Encode text as hexadecimal byte values and decode hex back to text.

Texte ↔ Octal

Convert text characters to octal code points and reverse it back to text.

Texte ↔ Décimal

Map every character to its decimal Unicode code point and back again.

Number Base Converter (Bin · Oct · Dec · Hex)

Convert numbers between binary, octal, decimal and hexadecimal in any direction — perfect for programming and computer science.

Questions Fréquentes

Is the Convertisseur de Base Numérique free to use?

Yes. The Convertisseur de Base Numérique is completely free with no sign-up, no limits and no watermarks. You can use it as many times as you like.

Is the Convertisseur de Base Numérique safe and private?

Absolutely. The Convertisseur de Base Numérique runs entirely in your browser, so your data never leaves your device and nothing is uploaded to a server.

Do I need to install anything to use the Convertisseur de Base Numérique?

No installation is needed. The Convertisseur de Base Numérique works instantly online in any modern browser on desktop, tablet or mobile.

Does the Convertisseur de Base Numérique work on mobile phones?

Yes. The Convertisseur de Base Numérique is fully responsive and works smoothly on iPhone, Android and any other device.