IP CIDR Calculator – Free Subnet Calculator

✓ Free IP Address & CIDR Subnet Calculator

Calculate network address, broadcast, host range from IP and CIDR prefix. Binary visualization of network and host bits.

• 🌐 Full Subnet Info — Network address, broadcast address, first/last usable host, total hosts, and wildcard mask.
• 📊 Binary Visualization — Visual breakdown of network bits vs host bits in binary format.
• 🏷️ IP Class Display — Shows IP class (A/B/C/D/E) and whether it's public, private, or reserved.
• 🔢 CIDR Prefix Support — Supports /0 to /32 prefix lengths (IPv4). Also accepts /0 to /128 for IPv6.

Full guide, how-to & FAQ →

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