Subnet Calculator
Calculate network details from CIDR notation
/24
/0/8/16/24/32
Common Prefixes
What is Subnet Calculator?
Enter an IPv4 address with CIDR prefix (e.g. 192.168.1.0/24) and get the network address, broadcast address, host range, subnet mask, wildcard mask, and total usable hosts. Essential for network planning and firewall rules.