Calculate IPv4 network, broadcast and usable host ranges from CIDR.
Managing network infrastructure requires precise calculations to ensure seamless communication and efficient address allocation. Whether you are setting up a local area network or managing enterprise-level cloud infrastructure, knowing your network boundaries is critical. Our free ip subnet calculator is designed to make this process effortless for network administrators, IT professionals, and students alike.
Instead of manually converting binary octets and calculating wildcard masks on paper, our tool delivers instant, accurate results. By simply entering an IP address and selecting your subnet mask or CIDR prefix, you unlock a comprehensive breakdown of your network topology.
Accurate subnetting prevents IP conflicts, optimizes broadcast domains, and ensures your network scales properly. Doing these calculations manually leaves room for human error, which can lead to downtime or security misconfigurations. Our tool automates the math so you can focus on building and maintaining secure networks.
A subnet mask is a 32-bit number that divides an IP address into a network address and a host address, determining which part of the IP belongs to the network and which part identifies the specific device.
CIDR (Classless Inter-Domain Routing) is a method for allocating IP addresses and routing packets. It is written as a slash followed by a number (e.g., /24), representing the number of bits set to 1 in the subnet mask.
Yes, all developer and file utility tools on Potato PDF, including this calculator, are completely free with no usage limits.