CIDR Calculator
Visualize and calculate IP subnets with ease. Get instant details on network masks, broadcast addresses, and usable IP ranges for your networking configurations.
Understanding IP Subnetting
Subnetting is the practice of dividing a network into two or more smaller networks. This improves routing efficiency, enhances security, and helps manage IP address allocation more effectively.
Our CIDR Calculator simplifies this process by breaking down a block into its core components. Whether you are setting up a home network or managing a large cloud infrastructure on AWS or GCP, having accurate subnet details is critical for preventing IP conflicts and ensuring proper connectivity.
CIDR Calculator FAQs
What is CIDR?
CIDR (Classless Inter-Domain Routing) is a method for allocating IP addresses and IP routing. It replaces the old system based on Class A, B, and C networks.
How do I use this calculator?
Enter an IP address followed by its CIDR prefix (e.g., 192.168.1.0/24) to see the network details, including the range of usable IP addresses and the broadcast address.
Does this tool work offline?
Yes. All calculations are performed locally in your browser. No networking data is sent to our servers.
What is a subnet mask?
A subnet mask is a 32-bit number used to identify the network and host portions of an IP address. In CIDR notation, it's represented by the suffix (e.g., /24).