Subnet Calculator

Calculate IPv4 subnet details, visualize binary representations, divide networks into subnets, and explore CIDR notation with an interactive slider.

Enter IP Address

IP Address / CIDR

Please enter a valid IPv4 address

Subnet Mask (optional)

CIDR Prefix Length /24

/0/8/16/24/32

Network Details

Addressing

Binary Representation Network bits | Host bits

Subnet Division

Split into N subnets

Common Subnet Reference

CIDR	Subnet Mask	Wildcard Mask	Total Addresses	Usable Hosts