1. Home
  2. Webmaster Auxiliary Tools
  3. Online Network Calculator | TCP/IP Subnet Mask Calculation and Conversion Tool

Online Network Calculator | TCP/IP Subnet Mask Calculation and Conversion Tool

This is a LAN planning tool that can perform subnet calculations, subnet mask conversions in various numeral systems, IP address conversions in various numeral systems, and other functions, suitable for friends who are engaged in LAN planning and network calculations.

Network and IP Address Calculator

Displays the network, broadcast, first and last addresses of a given network

The network mask in "bit format" is also known as CIDR format (CIDR = Classless Inter-Domain Routing).

Subnet Mask Converter (Binary to Decimal Format)

Network/Node Calculator

Decimal Subnet Mask Calculator

Decimal Subnet Mask Converter

Calculate the bitwise complement of an IP address (inverse)

Network and IP Address Calculator

Default

Host Number Based Mask Address Calculator

TCP/IP Converter

Mask to Network Available Address Quantity Converter

IP Multicast Address Range

Multicast addresses are easily recognizable by the pattern "111" at the beginning.

224... - 224...255 are well-known multicast addresses for control channels.

224..1. - 238.255.255.255 are globally scoped (Internet-wide) multicast addresses.

239... - 239.255.255.255 are locally scoped multicast addresses.