IP Subnet Calculator

Calculate network details from an IP address and subnet mask/CIDR.

IP Address:

Subnet Mask or CIDR:

Results:

Enter IP and Mask/CIDR to see results.

How to Use the IP Subnet Calculator:

1 Enter an IP Address (e.g., 192.168.1.100).
2 Enter the Subnet Mask (e.g., 255.255.255.0) or CIDR notation (e.g., /24).
3 Click the "Calculate Subnet" button.
4 The network address, broadcast address, usable host range, and number of hosts will be displayed.