CIDR Calculator
Enter a CIDR notation like 192.168.1.0/24 to instantly convert it to a subnet mask, calculate the full IP address range, and determine network boundaries. Get detailed results including network address, broadcast address, usable host count, and wildcard mask — everything you need for accurate IP address management and network planning. Use the subnet mask calculator to find the correct mask for a given number of hosts — enter your host requirement and get the optimal prefix.
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Common CIDR Blocks
CIDR Calculation Results
Network Details
Binary Representation
Related Network Tools
Explore these related tools for subnet calculation and IP address management. The subnet calculator converts a CIDR prefix into a complete subnet breakdown including address class, host range, and binary view.
Additional networking calculators for IP address planning and network analysis. The ipv6 subnet calculator outputs the first and last address in any IPv6 block alongside the total number of addresses.
More tools to support network design, addressing, and subnet troubleshooting. Run the vlsm calculator to generate a VLSM plan that fits multiple subnet sizes into a single address block without overlap.
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