Subnet Calculator
A free, browser-based networking tool that calculates network details for any IPv4 or IPv6 address and CIDR prefix.
Key Features:
- Instant calculation of network address, subnet mask, broadcast, wildcard, and usable host range
- Visual binary representation showing the network/host bit split
- Supports CIDR prefixes from /0 through /32, including special cases like /31 and /32
- IPv4 and IPv6 calculator modes
- Example IPs for quick testing (192.168.1.0/24, 10.0.0.1/16, etc.)
Use Cases:
- Network administrators planning IP address allocation
- Students learning subnetting and CIDR notation
- IT professionals configuring static routes and network segments
- Anyone needing quick binary breakdown of IP prefixes
