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IP Subnet Calculator - IPv4 & IPv6 Subnetting Tool

Accurate IPv4 and IPv6 subnet calculator for network, mask, hosts, and subnets.


IP Subnet Calculator - IPv4 & IPv6 Subnetting Tool

Calculate Subnets, Masks & Hosts Instantly

The IP Subnet Calculator is a powerful tool that enables you to perform subnetting calculations for both IPv4 and IPv6 networks. Subnetting helps divide a large network into smaller, more manageable sub-networks to optimize performance and security.

With this tool, you can:

  • Calculate subnet masks and network classes.
  • Determine the number of hosts per subnet.
  • Find available subnets based on mask bits or subnet bits.
  • Work with both IPv4 and IPv6 addresses.
  • Plan efficient IP address allocation for enterprise or ISP networks.

Simply enter an IP address and subnet mask to generate detailed subnet information. Perfect for network engineers, sysadmins, students, and IT professionals.