IP Subnet Calculator

Calculate subnet details from an IP address and CIDR prefix.

Input Details

Subnet Details

Results of the subnet calculation.

Enter an IP and subnet mask to see details.

Understanding IP Subnetting

Subnetting is the process of dividing a single large network into multiple smaller, more manageable networks, or subnets. This calculator helps network administrators and students understand the properties of a given subnet. By providing an IP address and a subnet mask (in CIDR notation), it calculates key information such as the network address, broadcast address, range of usable IP addresses for hosts, and more.