CIDR Calculator

Subnet scoping, splitting, and range conversion. Navigate between supernets/subnets with one click.

CIDR Notation
/24 256 hosts · mask 255.255.255.0
IPv4 Network Details
Network Address 192.168.1.0
Broadcast 192.168.1.255
Subnet Mask 255.255.255.0
Wildcard Mask 0.0.0.255
First Usable 192.168.1.1
Last Usable 192.168.1.254
Total Hosts 256
Usable Hosts 254
Class C
Scope Private (RFC1918 192.168/16)
CIDR 192.168.1.0/24
Binary
IP11000000.10101000.00000001.00000000
Mask11111111.11111111.11111111.00000000
Net11000000.10101000.00000001.00000000
Quick mask reference (/8–/32)