SlickTools
Subnet Calculator

Subnet Calculator

Enter an IP address in CIDR notation to calculate subnet details. Network address, broadcast, host range, masks, and more.

Enter IP with CIDR notation — e.g. 10.0.0.0/8, 172.16.0.0/12

Results for 192.168.1.0/24

Network Address192.168.1.0
Broadcast Address192.168.1.255
First Usable Host192.168.1.1
Last Usable Host192.168.1.254
Subnet Mask255.255.255.0
Wildcard Mask0.0.0.255
CIDR Prefix/24
Total Hosts256
Usable Hosts254

Common subnet masks

CIDRSubnet MaskUsable Hosts
/8255.0.0.016,777,214
/16255.255.0.065,534
/24255.255.255.0254
/25255.255.255.128126
/26255.255.255.19262
/27255.255.255.22430
/28255.255.255.24014
/30255.255.255.2522