IPv4 Subnet Calculator

Calculate network address, broadcast address, usable hosts and more for IPv4 subnets

Enter an IP address with optional CIDR notation (e.g., 192.168.0.1/24) or without mask

Netmask

Network Address

Network Mask

Network Mask in Binary

CIDR Notation

Wildcard Mask

Network Size

First Address

Last Address

Broadcast Address

IP Class