🌐 CIDR Calc
CIDR Calc
Subnet calculator
All Tools
CIDR Subnet Calculator
Calculate network details from an IP and prefix length.
How to use ▸▾
Enter an IP and prefix in 192.168.1.0/24 format, then click Calculate.
Examples:10.0.0.0/8 — large network, 192.168.1.0/30 — only 2 hosts.
Results show network address, broadcast, subnet mask, usable hosts, and IP range.
Network
—
Broadcast
—
Usable Hosts
—
Subnet Mask
—
Wildcard Mask
—
Host Range
—
