Number Base Converter
Pick a base, enter a number, and see it in binary, octal, decimal and hexadecimal at once. Click any value to copy it. Everything runs in your browser.
Click any value to copy it. 🔒 Runs in your browser.
🔒 Tout se passe dans ton navigateur — rien n'est envoyé ni stocké.
Questions fréquentes
- How do I convert binary to decimal (or hex)?
- Select the base of your input, type the number, and all four bases — binary, octal, decimal and hex — update instantly. Click any result to copy it.
- Does it handle hexadecimal letters?
- Yes. Hex input accepts 0–9 and A–F (any case), and hex output is shown in uppercase.
- Is anything uploaded?
- No. The conversion runs entirely in your browser.