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. Run the ipv6 address expander to convert :: compressed addresses to their full form for use in LDAP queries or DNS zone files.
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. You can calculate cidr notation for any subnet by entering the network address and host count — the tool finds the prefix.
Additional networking calculators for IP address planning and network analysis. The cidr to ip range calculator converts any CIDR block into the full IP address range it contains — showing first, last, and total count.
Comments & Feedback
Share your experience or ask questions about this tool