Sub Net Calculator

Sub Net Calculator is a compact tool for calculating IPv4 subnet breakdowns based on network mask, prefix length, or host requirements.

Whether you're planning address ranges, segmenting networks, or just learning subnetting, this utility gives clear, immediate answers.

Simply enter an IP address and adjust: - Network mask (or prefix length) - Number of subnets or hosts per subnet

The tool then displays a list of all generated subnets, including: - Subnet address and mask - Host address range - Broadcast address - Subnet size (host count)

It's ideal for network engineers, students preparing for exams, or anyone needing to split or visualize address space.
You get fast, real-time feedback in a visual format — no CLI or formulas needed.

Included as part of the NetCrunch Admin Toolset, it's a great companion for IP planning and subnet validation.

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Features

• Calculates IPv4 subnets based on mask or prefix
• Shows host ranges, broadcast addresses, and sizes
• Accepts input by subnet count or host-per-subnet
• Useful for design, learning, and validation
• Fast, local, and no configuration required

Requires Windows 10 x64 or later.
Uses AdRem Application Engine (Chromium-based runtime), downloaded automatically if missing.