Subnet Calculator
Free online subnet calculator. Calculate subnet masks, CIDR ranges, and network information instantly.
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FAQ
What is CIDR notation?▼
CIDR (Classless Inter-Domain Routing) notation specifies IP ranges using /number format.
How do I calculate a subnet?▼
This tool calculates it automatically. Enter CIDR notation and get subnet details.
Use Cases
Network Design
Plan IP address allocation for networks
VPC Configuration
Configure subnets in cloud environments
Examples
CIDR Calculation
Input:
192.168.1.0/24
Output:
Subnet: 192.168.1.0, Broadcast: 192.168.1.255, Usable IPs: 254