Network address
192.168.1.0
Browser-only network math
Subnet calculator
Calculate IPv4 network details locally in your browser: subnet mask, network address, broadcast address, total addresses, usable hosts, and usable range.
IPv4 input
Calculate a subnet
Choose CIDR or subnet mask. The paired field stays in sync.
Results
Calculated network
192.168.1.1/24 resolves to 192.168.1.0/24.
Broadcast address
192.168.1.255
Subnet mask
255.255.255.0
Wildcard mask
0.0.0.255
Total addresses
256
Usable hosts
254
Usable range
192.168.1.1 - 192.168.1.254
Standard subnets reserve the network and broadcast addresses.
Bit view
Binary breakdown
Dots stay aligned by octet so the mask boundary is easier to read.
IP address
11000000.10101000.00000001.00000001
Subnet mask
11111111.11111111.11111111.00000000
Network
11000000.10101000.00000001.00000000
Broadcast
11000000.10101000.00000001.11111111
Use this when
Translate CIDR into usable addresses
Enter an IPv4 address, then choose a CIDR prefix or subnet mask to find the network address, broadcast address, wildcard mask, host count, and usable range. The math runs locally in the browser.
This is useful when planning VLANs, checking firewall rules, reading route tables, or confirming whether two addresses should be in the same subnet.