🧮Subnet Calculator
Calculate network address, broadcast address, subnet mask, IP range, and total usable hosts from CIDR notation. Works entirely client-side.
🧮 Calculate Subnet
Enter CIDR notation above (e.g., 192.168.1.0/24).
How It Works
This tool performs all calculations client-side in your browser using bitwise operations. No data is sent to our servers. Enter a CIDR notation (e.g., 192.168.1.0/24) and get instant results.
Frequently Asked Questions
What is CIDR notation?
CIDR (Classless Inter-Domain Routing) notation expresses an IP address and its routing prefix, like 192.168.1.0/24. The number after the slash indicates how many bits are used for the network portion.
How do I calculate subnets?
Enter an IP address with CIDR prefix (e.g., 10.0.0.0/16) and our calculator will show the network address, broadcast address, subnet mask, usable IP range, and total number of hosts.