IP Subnet Calculator
Calculate IP subnets, CIDR blocks, and network addresses
Network Configuration
Enter any IP address within the network you want to analyse
Enter subnet mask (e.g., 255.255.255.0) OR use CIDR notation below
Enter CIDR notation (0-32) OR use subnet mask above
Network Analysis Results
Enter network details and click Calculate to analyse your IP subnet
About this calculator
IP Subnet Calculator: A networking calculator for CIDR, subnets, host ranges, and masks.
How it works
- Enter an IPv4 network and prefix length.
- Choose subnetting direction and target size.
- The tool returns network ID, broadcast, and usable host ranges.