There was a download of Subnet Calculator 4x on the developer's website when we last checked. We cannot confirm if there is a free download of this software available. The program belongs to Internet & Network Tools.
The following versions: 4x and 1.0 are the most frequently downloaded ones by the program users. This free software is a product of Boson Software, Inc.
We cannot guarantee that the program is safe to download as it will be downloaded from the developer's website. Before launching the program, check it with any free antivirus software. The most frequent installation filenames for the software are: bosncalc.exe, SC.exe and SC2.EXE etc.
From the developer:
The Subnet Calculator (SC) by Dx21 is a utility designed to assist in the discovery of appropriate subnetting schemes for your network. The SC can find the appropriate subnet mask (with range information) for Class A, B, and C networks, based on input from you, such as how many segments are required, or how many computers per segment you require. Results can be saved to a report file for easier reference.
You may want to check out more software, such as Reliable Subnet Calculator, Free Percentage Calculator or Rad Pro Calculator, which might be similar to Subnet Calculator.
Network tools
Network tools