Visual Subnet Calculator
Enter a network address and CIDR prefix to visually split it into smaller subnets and see how address space is allocated across your infrastructure. Divide, merge, and label subnet blocks interactively with a graphical subnet map — ideal for network design, IP planning documentation, and VLSM visualization. Save your subnet plan or IP ranges in a free notepad at Notepadly. To calculate cidr from an IP address and mask, enter both and the tool outputs the CIDR prefix and full subnet details.
Related Network Tools
Explore these related tools for subnet calculation and IP address management. The netmask to cidr converter bi-directionally converts between mask and prefix formats, including wildcard mask output.
Additional networking calculators for IP address planning and network analysis. The cidr to ip range calculator outputs the start IP, end IP, and total address count for any CIDR notation entry.
Comments & Feedback
Share your experience or ask questions about this tool