Number Base Converter

Base 2 (Binary)

Base 8 (Octal)

Base 10 (Decimal)

Base 16 (Hex)

Custom Base

Digit Symbols

First symbol = 0, second = 1, etc.

About This Number Base Converter

This browser-based number base converter helps you quickly convert numbers between different numeral systems. Supports binary (base 2), octal (base 8), decimal (base 10), hexadecimal (base 16), and any custom base with your own digit symbols. All conversions happen in your browser - your data remains private and is never sent to any server.

Key Features:

Multiple Bases: Convert between binary, octal, decimal, hexadecimal, and custom bases
Custom Symbols: Define your own digit symbols for any base
Real-time Conversion: See results instantly as you type
Input Validation: Only valid digits for each base are accepted
Extended Symbols: Default symbols include 0-9, A-Z, and Greek letters for higher bases

Use Cases:

Programming: Convert between binary, hex, and decimal for debugging
Education: Learn how different number systems work
Mathematics: Explore arbitrary base number systems
Custom encodings: Create your own symbol-based number representations

🔒 Privacy-Friendly: All conversions are performed entirely in your browser using JavaScript. Your data never leaves your device.