Subnet & CIDR Calculator
Calculate network boundaries, IP address ranges, netmasks, and usable hosts for IPv4.
Network Calculations
| Network Address | |
|---|---|
| Usable IP Range | |
| Broadcast Address | |
| Usable Hosts | |
| Subnet Mask | |
| Wildcard Mask | |
| IP Class |
32-Bit Binary Visualization
Network Bits (Cyan)Host Bits (Purple)
...
How does this tool work?
Calculate IP subnets and visualize CIDR network masks.
Enter an IP address and a CIDR prefix (e.g. /24). The tool calculates network address, usable host addresses, broadcast address, and wildcard mask. A 32-bit grid visualizes the division into network and host bits.
Where are my data processed?
100% Client-Side: Your data never leaves your browser.
All calculations, conversions, encodings, and file processing of this tool are executed exclusively locally via JavaScript on your client device. No inputs, passwords, cryptographic keys, texts, or uploaded files are ever sent to our servers or third parties. Once the page is loaded, the tool remains completely functional even offline.
No Server Upload100% GDPR CompliantRuns Offline in Tab