IPv4 subnet (CIDR)
Enter your numbers — the results update instantly.
Network192.168.1.128/26
Broadcast192.168.1.191
Netmask255.255.255.192
Host range192.168.1.129 – 192.168.1.190
Usable hosts62
Worked example
Given: IP / prefix = 192.168.1.130/26
Result: Network = 192.168.1.128/26; Broadcast = 192.168.1.191; Netmask = 255.255.255.192; Host range = 192.168.1.129 – 192.168.1.190; Usable hosts = 62
How it is calculated
1. Enter the values you know. 2. The calculator converts them to base units and applies the formula. 3. The result is shown in the unit you choose.
Frequently asked questions
How do I calculate it?
Given: IP / prefix = 192.168.1.130/26. Result: Network = 192.168.1.128/26; Broadcast = 192.168.1.191; Netmask = 255.255.255.192; Host range = 192.168.1.129 – 192.168.1.190; Usable hosts = 62.
Is the calculator free and private?
Yes. It is free, needs no sign-up and runs in your browser — the numbers you type stay on your device.