Subnet Calculator
Subnet Calculator
Enter a CIDR block (like 192.168.1.0/24) and this tool will break it down completely: network address, broadcast, host range, subnet mask, wildcard mask, and IP class. All the math runs locally in your browser with no external dependencies.
Network Address
Broadcast Address
First Usable Host
Last Usable Host
Usable Hosts
Subnet Mask
Wildcard Mask
IP Class
Total Addresses
Enter an IPv4 address with prefix length, e.g. 10.0.0.0/8
