IP Subnet Calculator

Calculate network addresses, host ranges, VLSM subnets, and visualize IP allocations.

IP Address

CIDR / Prefix

Network Address (e.g. 192.168.1.0/24)

Subnets Needed

Subnet Name

Hosts

Subnet Name

Hosts

🚀 Explore 125+ Free Developer Tools

From CSS generators to JSON formatters — all free, no signup required.