IP / CIDR Calculator

Calculate subnets, host ranges, and masks for IPv4 CIDR notation.

Quick Presets

Network Address
192.168.1.0
Broadcast Address
192.168.1.255
Subnet Mask
255.255.255.0
Wildcard Mask
0.0.0.255
First Usable Host
192.168.1.1
Last Usable Host
192.168.1.254
Total Addresses
256
Usable Hosts
254
CIDR Notation
192.168.1.0/24
IP Class
Class C
Address Type
Private (RFC 1918)
Host Range
192.168.1.1 – 192.168.1.254

Binary Breakdown

IP Address
11000000101010000000000100000000
192.168.1.0
Subnet Mask
11111111111111111111111100000000
255.255.255.0
Network
11000000101010000000000100000000
192.168.1.0
CIDR /24
NNNNNNNNNNNNNNNNNNNNNNNNHHHHHHHH N=network H=host

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