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IP / CIDR Calculator

v1.0.1

Calculate subnet masks, network addresses, broadcast addresses, and host ranges from CIDR notation.

Calculates subnet details from an IP address and CIDR prefix — network address, broadcast address, usable host range, subnet mask, wildcard mask, and number of hosts.

How to use
  • →Enter an IP address in CIDR notation (e.g. 192.168.1.50/24) and press Calculate.
  • →Review the output table for network address, broadcast address, first/last usable host, and host count.
  • →Use the subnet split panel to subdivide a network into equal smaller subnets.
  • →Toggle between IPv4 and IPv6 mode to calculate IPv6 prefix sizes and address ranges.