IPv4 Subnet Calculator
Calculate subnets, host ranges, and network addresses instantly.
- CIDR notation support
- Real-Time Calculations
- Mobile Friendly
Free Network Planning Tools for IT Professionals
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IPv6 Subnet Calculator
Plan IPv6 networks with hexadecimal addressing support.
- IPv6 CIDR notation support
- Prefix calculations
- Future-ready networking
Network Planner
Professional network planning tool with IPv4/IPv6 support and overlap detection
- Subnet calculations & validation
- Overlap detection
- Auto-Save to browser
- Export & Import Plans
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