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Organizing computers and activity on a network often requires the creation of subnets, or subnetworks. It is especially important when dealing with large networks, as it allows you to group multiple computers together, for various purposes, while still keeping them on the same network as all other machines in the building.

IPv4 Calculator is an open-source tool that makes setting up these subnets a whole lot easier. It helps you figure out exactly how many computers can be assigned to each subnet, which IP addresses should be used and how many subnets will be required.

To begin with, you need to provide an IP address and Subnet Mask, as well as set the network class and prefix. Based on these parameters, some useful properties will be displayed in the bottom-right corner of the window.

Next, you will have to define the number of subnet bits, subnets and hosts. These values may be adjusted automatically based on the other parameters. When you’re done, simply click the Subnetting button to generate a list of potential subnets.

The application will show you the subnet’s network ID and prefix, as well as the first and last address assigned to each subnet.

You can then use this information to organize the devices on your network, and it is easy to try out multiple alternatives by just replacing some of the parameters.

IPv4 Calculator is a very simple piece of software, and it features a minimalistic user interface that you will get accustomed to in no time.

It is worth mentioning that the application does not need to be installed before launch. Moreover, it will leave no traces behind after it is shut down, and you can remove it easily by just deleting the executable file.

Overall, IPv4 Calculator is a simple but very useful tool that enables you to plan the configuration of subnets on your network. It is small, portable and very easy to use.