Our CIDR Calculator simplifies network subnetting. Input an IP address and its CIDR prefix (e.g., 192.168.1.0/24) to instantly determine the Subnet Mask, Network Address, Broadcast Address, and the range of Usable Host IPs. Essential for efficient network planning and configuration.
Formula:
CIDR (Classless Inter-Domain Routing) simplifies IP address allocation. While there isn't a single 'formula' like in algebra, the calculations involve bitwise operations to derive network parameters from an IP Address (A.B.C.D) and its CIDR Prefix (/X).
- Subnet Mask: Determined by the number of network bits (X).
- Network Address: IP Address logically ANDed with the Subnet Mask.
- Broadcast Address: Network Address logically ORed with the inverted Subnet Mask.
- Total Hosts: 2(32-X)
- Usable Hosts: Total Hosts - 2 (subtracting network and broadcast addresses)