Calculate /24
ip = 192.168.1.100prefix = 24
Result: Network: 192.168.1.0, Broadcast: 192.168.1.255
IPv4 Subnet Calculator
Enter an IPv4 address and prefix length (CIDR) to calculate network address, broadcast address, host range, subnet mask, wildcard mask, and usable host count.
Enter your values and press Calculate — the result appears here.
Worked examples
Frequently asked questions
What is the difference between /24 and /25?
/24 gives 256 addresses (254 usable hosts). /25 splits that into two subnets of 128 addresses (126 usable hosts) each.
Why subtract 2 from total hosts?
The network address and broadcast address cannot be assigned to hosts.
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