About SubnettingCalculator

Your trusted partner for professional network planning and subnet calculations. Empowering IT professionals and network administrators with accurate, fast, and reliable network tools.

Who We Are

SubnettingCalculator.com is a specialized platform dedicated to providing comprehensive network calculation tools for IT professionals, network administrators, and networking students worldwide. We understand the critical importance of accurate subnet planning in network infrastructure design.

Our platform offers industry-leading IPv4 and IPv6 subnet calculators, FLSM and VLSM tools, supernetting capabilities, and comprehensive reference charts. Every tool is designed with precision, reliability, and user experience in mind.

Advanced Calculators

Professional-grade IPv4 and IPv6 subnet calculators with real-time validation and comprehensive network analysis capabilities.

VLSM & FLSM Tools

Variable and Fixed Length Subnet Mask calculators for optimal IP address allocation and network design efficiency.

Reference Charts

Complete IPv4 and IPv6 reference charts with CIDR notation, subnet masks, and network planning lookup tables.

Network Planning

Supernetting tools and advanced network aggregation capabilities for enterprise-level network optimization.

Our Mission

To provide the most accurate, user-friendly, and comprehensive network calculation tools available online. We strive to simplify complex networking concepts while maintaining the precision that professionals demand.

Our goal is to save IT professionals valuable time and reduce calculation errors in network planning, design, and troubleshooting activities.

Trusted by Professionals

100%

Free to Use

24/7

Available Online

8+

Professional Tools

29,628

Total Visits

Our Commitment

Accuracy First

Every calculation is thoroughly tested and validated to ensure 100% accuracy in results.

Lightning Fast

Instant calculations with real-time updates and responsive design for all devices.

User Focused

Designed by network professionals for network professionals with intuitive interfaces.

Always Available

Reliable 24/7 access to all tools with no registration or software installation required.

Built for Professionals

SubnettingCalculator.com is developed by experienced network engineers and software developers who understand the daily challenges faced by IT professionals. Our team combines deep networking knowledge with modern web development expertise.

We continuously improve our tools based on user feedback and evolving industry standards. Our commitment to excellence ensures that SubnettingCalculator.com remains the most trusted platform for network calculations.