This calculator performs subnet calculations based on the provided IP address netmask mask bits and/or number of hosts. The calculator calculates the available host IP address range network address broadcast address and wildcard mask.

The application is separated into two parts: input and results. First of all the input enables the user to enter an IP address. Furthermore the user can choose the subnet mask mask bits and/or number of hosts. Note that these three properties are related to each other. Therefore if the user changes one of these three properties (subnet mask mask bits or number of hosts) the other two will also automatically change. Finally the notation of the results can be chosen (decimal binary or hexadecimal).

Once the input changes the results are calculated and shown immediately in the application. These results include the CIDR notation first host address last host address network address broadcast address and wildcard mask. Based on the notation setting these addresses and mask are shown in either decimal binary or hexadecimal notation.