Convert Numbers for Networking

Convert subnet masks, port numbers, and IP address octets between binary and decimal.

Non é necesario iniciar sesión

Input base:

Decimal number

Quick values

Networking tips

🌐

IP address octets are in decimal (0–255). Each octet is one byte — 8 bits. 192.168.1.1 means 11000000.10101000.00000001.00000001 in binary.

📡

Subnet masks like 255.255.255.0 are 11111111.11111111.11111111.00000000 in binary. The number of 1s = prefix length (/24 in this case).

💡

Port numbers 0–65535 fit in 16 bits (2 bytes). Port 80 = 0x50 = 01010000 binary. Port 443 = 0x1BB = 110111011 binary.

🔢

MAC addresses are 6 hex bytes (e.g. FF:FF:FF:FF:FF:FF). Convert each colon-separated byte to see its decimal and binary equivalent.

Entra

Enter your data into the tool above. Everything stays local to your browser.

Proceso

The tool processes your data instantly in your browser using JavaScript. No server, no waiting.

Descargar

Get your result instantly. Nothing is stored after you leave the page — complete privacy.

✓Completamente gratuíto, sen custos ocultos, nunca

✓Non se precisa ningunha conta, correo electrónico ou inicio de sesión

✓Os ficheiros nunca saen do teu dispositivo

✓Non hai límites de tamaño de ficheiro

✓Non hai marcas de auga en ningunha saída

Convert Numbers for Programming

Convert between binary, octal, decimal, and hex wh

Number Systems for Computer Science

Learn and verify binary, octal, hex conversions —

Inspect Bit Patterns and Flags

Convert numbers to binary to inspect individual bi

Decode Hex Dumps and Debug Logs

Decode hexadecimal values from crash reports, memo