Network administration requires precise calculation of IP addresses, subnet ranges, and host allocations. A subnet mask calculator simplifies this complex task by automatically computing network addresses, broadcast addresses, usable IP ranges, and other critical networking values. Whether you're setting up a small office network or managing enterprise infrastructure, understanding how to calculate subnet masks is essential for efficient network design. This guide explains everything you need to know about subnet mask calculators in clear, simple terms. You'll learn what subnet masks are, why they matter, how to calculate them, and when to use calculator tools to avoid costly mistakes. What is a Subnet Mask Calculator? A subnet mask calculator is a tool that performs network calculations based on an IP address and subnet mask you provide. It instantly shows you important information about your network including: Network address (the subnet identifier) Broadcast address (used t...