Netmask to CIDR Converter
Enter a subnet mask like 255.255.255.0 or a CIDR prefix like /24 to instantly convert between the two formats. Get bi-directional netmask to CIDR conversion with wildcard mask, total hosts, and network size details — useful for translating between router configurations and IP address documentation. The cidr calculator outputs network address, broadcast address, first and last usable hosts, and total address count from any CIDR entry.
Netmask → CIDR
CIDR → Netmask
Additional Details
Complete Conversion Reference
| CIDR | Netmask | Wildcard | Hosts |
|---|
Related Network Tools
Explore these related tools for subnet calculation and IP address management. Run the vlsm calculator to generate a VLSM plan that fits multiple subnet sizes into a single address block without overlap.
Additional networking calculators for IP address planning and network analysis. The visual subnet calculator lets you split, merge, and label subnet blocks on a visual grid for network design documentation.
Comments & Feedback
Share your experience or ask questions about this tool