IP Subnet Calculator

Calculate IPv4 subnet details including network, broadcast, host range, masks, and binary representations.

IP subnet calculator

Presets (common scenarios)

Network

IP address ? —

Prefix ? —

/0/8/16/24/32

Subnet mask ? —

Subnet details

—

Network address

Broadcast address

First host

Last host

Usable hosts

—

Total hosts

—

Subnet mask

Wildcard mask

Bit ruler

Network bits filled · host bits open

18162432

Address (binary)

—

Mask (binary)

—

Network (binary)

—

Split into smaller subnets

Split current network into:

—

#	Network	Usable range	Broadcast	Usable
Pick a smaller prefix to split the current network.

Usable hosts

— in 192.168.1.0/24

Adjust the prefix or enter an address to instantly see the network.

Class

—

Subnets

—

Mask

—

Address range

—

— —

Network

—

Usable hosts

—

Broadcast

—

Tip

Drag the slider or edit the prefix to instantly see the network, broadcast, and host ranges. Host bits in the entered IP are stripped when computing the network address.