Simulators

Subnet calculator

Type an address with its prefix, such as 192.168.1.10/26. The calculator shows it in binary with the network part and the host part marked, and works out the subnet mask, the network and broadcast addresses, the usable host range and the number of hosts.

The simulator

Subnet calculator: how to use it

Choose how many equal subnets to split the network into and see each one's range.

Lessons that use it

  • Subnetting (Networks)Work out a network's mask, network address, broadcast address and host range, and split a network into smaller subnets.

See also