Subnet Calculator

Enter IP Address and CIDR Notation:

IP Address

CIDR

Enter IP Address and Subnet Mask:

IP Address

Subnet Mask

Enter Network Address and Required Hosts:

Network

Hosts

Subnet Visualization

IP Address: 192.168.1.1

CIDR: /24

Network Bits

Host Bits

Subnet Calculation Results

Network Address

192.168.1.0

Broadcast Address

192.168.1.255

Usable Hosts

254

Subnet Mask

255.255.255.0

Detailed Information

IP Address: 192.168.1.1

CIDR Notation: /24

Wildcard Mask: 0.0.0.255

Binary Subnet Mask: 11111111.11111111.11111111.00000000

IP Class: Class C

IP Type: Private

About Subnet Calculator

CIDR Notation Support

Calculate subnet information using CIDR notation (Classless Inter-Domain Routing), which allows for flexible allocation of IP addresses beyond traditional class boundaries.

IPv4 and IPv6 Support

Calculate subnet information for both IPv4 and IPv6 addresses. Our calculator handles all standard IPv4 subnet masks and IPv6 prefix lengths.

Network Planning Tools

Plan your network infrastructure with tools for calculating network addresses, broadcast addresses, usable host ranges, and subnet masks.

VLSM Calculation

Calculate Variable Length Subnet Masking (VLSM) to efficiently allocate IP addresses across subnets of different sizes within a single network.