Visual Subnet Calculator is a modernized tool based on the original work by davidc.
It strives to be a tool for quickly designing networks and collaborating on that design with others. It focuses on
expediting the work of network administrators, not academic subnetting math.
Visual Subnet Calculator uses modern clipboard APIs to provide seamless integration with different applications. When you copy a table using the "Copy Table" button, the clipboard receives the data in multiple formats simultaneously:
Plain Text Format (TSV) - Tab-separated values for Excel and similar spreadsheet applications
HTML Table Format - Properly structured HTML tables for Confluence, Word, and other rich-text applications
This dual-format approach means you copy once and paste anywhere - each application automatically selects the format it prefers. Excel will use the TSV format to create proper cells and columns, while Confluence will use the HTML format to create a formatted table. This eliminates the need for manual reformatting after pasting.
The following tenets are the most important values that drive the design of the tool. New features, pull requests, etc
should align to these tenets, or propose an adjustment to the tenets.
Simplicity is king. Network admins are busy and Visual Subnet Calculator should always be easy for FIRST TIME USERS to
quickly and intuitively use.
Subnetting is design work. Promote features that enhance visual clarity and easy mental processing of even the most
complex architectures.
Users control the data. We store nothing, but provide convenient ways for users to save and share their designs.
Embrace community contributions. Consider and respond to all feedback and pull requests in the context of these
tenets.