Visual CIDR & Subnet Calculator

Calculate netmasks, broadcast addresses, usable IP host ranges, and visually partition AWS / GCP cloud VPC subnets without complex binary math.

IP Address

CIDR Prefix

Common Presets

Subnet Mask Slider: /24

Netmask

255.255.255.0

Wildcard Mask

0.0.0.255

Network ID

192.168.1.0

Broadcast Address

192.168.1.255

Usable Host Range

192.168.1.1 — 192.168.1.254

Usable Hosts

254

Total IP Addresses

256

IP Address: 11000000.10101000.00000001.00000000

Subnet Mask:


                        11111111.11111111.11111111.00000000

Network Bits (24) Host Bits (8)

Partition this block into smaller equal subnets for AWS, Azure, GCP, or private data centers.

Partition into:

Subnet CIDR	Usable IP Range	Broadcast	Usable Hosts

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