Professional IP Subnet Calculator

The most accurate and reliable subnetting tool for network engineers. Calculate subnet masks, network addresses, broadcast addresses, and host ranges instantly. Free, professional-grade network administration tools.

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Professional Network Tools

Everything you need for network planning, administration, and security testing

IP Subnet Calculator

Professional subnet calculator for network planning and management. Calculate subnet masks, network addresses, broadcast addresses, and host ranges with precision.

  • Subnet mask calculation
  • Network address determination
  • Broadcast address calculation
  • Host range calculation
  • CSV export functionality
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Subnet Wizard

Plan your network by specifying subnet names, host requirements, and base network. Generate optimized subnet configurations automatically.

  • Network planning wizard
  • Subnet name management
  • Host requirement calculation
  • Automatic mask calculation
  • Direct calculator integration
Launch Wizard

Option 43 Generator

Generate DHCP Option 43 for Cisco WLC provisioning, EWC conversion, Catalyst to Meraki migration, and vendor-specific DHCP options.

  • Cisco WLC provisioning (f1xxx)
  • EWC conversion (f2xxx)
  • Catalyst to Meraki migration (f3xxx)
  • TFTP server configuration
  • Bidirectional conversion
Launch Generator

Type 7 Password Decryptor

Decrypt Cisco Type 7 encrypted passwords instantly. Essential tool for network administrators working with legacy Cisco devices.

  • Instant Type 7 decryption
  • Multiple example passwords
  • Copy-to-clipboard functionality
  • Input validation
  • Error handling
Launch Decryptor

Nmap Command Maker

Build professional nmap scanning commands with our intuitive GUI. Select scanning options, scripts, and parameters for network security testing.

  • Scan type selection
  • Port range configuration
  • Timing and performance options
  • NSE script selection
  • Output format options
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What is a Subnet Calculator?

A subnet calculator is an essential tool for network engineers and administrators that helps calculate subnet masks, network addresses, broadcast addresses, and host ranges.

Our IP Subnet Calculator provides:

  • Subnet Mask Calculation
  • Network Address Calculation
  • Broadcast Address Calculation
  • Host Range Calculation
  • CIDR Notation Support
  • Professional Export (CSV/Excel)
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Who Uses These Tools?

Our professional network tools are designed for IT professionals, network engineers, system administrators, and anyone working with network infrastructure.

Perfect for:

  • Network Engineers
  • System Administrators
  • IT Professionals
  • Network Security Analysts
  • Students & Educators
  • Network Consultants
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Frequently Asked Questions

Everything you need to know about our subnet calculator and network tools

A subnet calculator is a network tool that helps network engineers and administrators calculate subnet masks, network addresses, broadcast addresses, and host ranges. It works by taking an IP address and subnet mask as input, then performing binary calculations to determine the network boundaries and available host addresses within that subnet.

Subnet calculators are essential for network planning because they help you determine the optimal subnet mask for your network requirements, calculate the number of available host addresses, and ensure proper network segmentation. This is crucial for efficient IP address allocation and network security.

Our IP subnet calculator is designed with precision in mind, using industry-standard algorithms for all calculations. It provides accurate results for subnet masks, network addresses, broadcast addresses, and host ranges, making it a reliable tool for professional network administration.

Yes! Our subnet calculator supports both CSV and Excel export functionality. This allows you to save your subnet calculations for documentation, network planning reports, or sharing with team members. The export feature is particularly useful for network administrators who need to maintain detailed records.

Absolutely! Our IP subnet calculator is completely free to use with no registration required. We believe that professional network tools should be accessible to all network engineers and administrators, which is why we provide this subnet calculator free of charge.