Network Calculators  


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Subnet Mask Calculator

Enter the TCPIP Network Address:
Force as Class: Default Class A Class B Class C
Enter the required number of sub-networks:
OR enter the required number of nodes/hosts per network (including network & broadcast addresses)***:

Network Class:
Subnet Mask: or
Subnets:
Nodes/Hosts per Network (including network and broadcast addresses)***:

*** To add support for RFC3021 which allows for /31 networks, the subnet mask calculator has changed to accomodate this. To do this, the number of hosts now include the network and broadcast addresses since these are used for hosts in /31 networks.

Network/Node Calculator

Enter the Subnet Mask:
Enter the TCPIP Address:

Network:
Node/Host:
Broadcast Address:



IP Address Converter

Enter the dotted decimal TCPIP Address:
or Enter the binary TCPIP Address:
or Enter the hex TCPIP Address:
or Enter the decimal TCPIP Address:



Subnet Mask Converter

Enter the dotted decimal Subnet Mask
or Enter the number of bits in the subnetmask /



Subnet Mask Inverter

Enter the dotted decimal Subnet Mask
Enter inverted Subnet Mask