VLSM / CIDR Subnet Calculator

IPv4 VLSM Subnet Calculator for IT professionals and students.

A tool for IT professionals and students to divide networks into smaller more efficient subnets to meet host requirements. Also features a regular subnet calculator to discover the available hosts, address range, network address and broadcast address of a given IPv4 network with an easy slider to expand or shrink networks. Features Material Design and automatic dark/light mode.