Atomic Dev Tools

CIDR CalculatorCalculate subnet ranges, broadcast address and usable host count
Input
CIDR NotationFormat: <ip-address>/<prefix-length> — e.g. 10.0.0.0/8
Examples
Results
Network
192.168.1.0
Broadcast
192.168.1.255
Usable Hosts
254
IP Class
C
Network Details
Network Address192.168.1.0
Broadcast Address192.168.1.255
Subnet Mask255.255.255.0
Wildcard Mask0.0.0.255
First Usable Host192.168.1.1
Last Usable Host192.168.1.254
CIDR Range192.168.1.0/24
Total Addresses256
Usable Hosts254
Private Range192.168.0.0/16 (RFC 1918)
Binary Representation
Input IP11000000.10101000.00000001.00000000
Subnet Mask11111111.11111111.11111111.00000000
Network Addr11000000.10101000.00000001.00000000
Broadcast11000000.10101000.00000001.11111111

DWG · G-CIDR-CALCULATOR100% client-side·⌘C copy · ESC → grid