Number Base Converter

Number Base Converter translates an integer between binary (base 2), octal (base 8), decimal (base 10), and hexadecimal (base 16) — the four numbering systems that show up constantly in low-level programming, networking, and debugging. Type "255" and instantly see it as 0b11111111, 0o377, and 0xFF simultaneously. Hex is the lingua franca of memory addresses, color codes, MAC addresses, and binary file formats. When your debugger shows a pointer value like 0x7ffee8b2c000, this tool confirms what that number actually is in decimal. When you're writing a CSS color like #FF8800, the hex pairs map to RGB decimal values (255, 136, 0). When configuring subnet masks, file permissions (chmod 755), or reading assembly instructions, base conversion is the bridge between the human-readable and machine-native representations. The converter handles both unsigned integers and signed two's-complement values, which matters when you're working with 8-bit, 16-bit, or 32-bit registers in embedded systems or reverse engineering. Input can include standard prefixes (0x, 0b, 0o) or be plain digits — the tool auto-detects the base from context. Large values up to 53-bit precision (JavaScript's safe integer limit) are supported, covering the full range of IPv6 addresses and 64-bit memory offsets you'll encounter in practice.