Subnet Calculator
Calculate mask, IP range, host count by CIDR notation.
Subnet Calculator
Calculate IP subnet parameters: mask, broadcast address, host range, available address count. An essential tool for network administrators.
Subnet mask in different formats
Network and broadcast addresses
Available IP range
Number of hosts
How to Use
- Enter an IP address and subnet mask
- Click the network parameter calculation button
- Review address range, broadcast address and host count
Use Cases
- Plan subnet segmentation for infrastructure and environments.
- Prepare firewall and ACL rules based on IP ranges.
Limitations
- Focused on IPv4 CIDR calculations.
- Does not analyze real BGP routes or host reachability.
Example Input / Output
Example Input
192.168.10.0/26
Example Output
Mask 255.255.255.192, Host range 192.168.10.1-62, Broadcast 192.168.10.63.