Tool
Network Calculator
Calculate subnet information based on IP address and CIDR prefix. View network and broadcast address, host range and more.
IP Address / CIDR
About Network Calculator
What is CIDR?
CIDR (Classless Inter-Domain Routing) is a method for grouping IP addresses and routing. A prefix like /24 indicates how many bits form the network part.
Subnetting
Subnetting divides a network into smaller segments. The subnet mask determines which hosts belong to the same network.
Privacy
No data is stored. All formatting happens entirely client-side in your browser.