Calculate subnets, host ranges, masks, broadcasts, and wildcards. Convert addresses into binary and CIDR quickly. Get precise network details for planning, auditing, and troubleshooting.
Network Address = IP Address AND Subnet Mask
Broadcast Address = Network Address OR Wildcard Mask
Wildcard Mask = 255.255.255.255 minus Subnet Mask
Total Addresses = 2(32 − CIDR)
Usable Hosts = 2(32 − CIDR) − 2 for most subnets
For /31 networks, both addresses are usable. For /32, one host exists.
| Input IP | CIDR | Network | Broadcast | Usable Hosts |
|---|---|---|---|---|
| 192.168.10.25 | /24 | 192.168.10.0 | 192.168.10.255 | 254 |
| 10.20.5.14 | /16 | 10.20.0.0 | 10.20.255.255 | 65,534 |
| 172.16.8.130 | /26 | 172.16.8.128 | 172.16.8.191 | 62 |
This tool supports subnet planning, VLAN allocation, access control reviews, training exercises, inventory validation, and quick troubleshooting across routed or segmented environments.
It converts an IPv4 address and subnet size into network values. You can instantly see the network address, broadcast address, host range, mask, wildcard mask, and other planning details.
Yes. If you enter a valid subnet mask, the calculator converts it into the matching CIDR prefix automatically. That helps when you work with traditional masks in documentation.
These prefixes behave differently from standard host networks. A /31 is often used on point-to-point links, while a /32 represents one exact host address.
A wildcard mask is the inverse of the subnet mask. Network engineers often use it in access control entries, routing filters, and device configuration rules.
No. This version is focused on IPv4 subnetting. That keeps the results simple and clear for common LAN, WAN, firewall, and router planning tasks.
Most IPv4 networks reserve one address for the network and one for broadcast. The usable host count usually equals total addresses minus two.
Block size shows the increment between subnet boundaries in the interesting octet. It helps you identify the next subnet quickly during manual subnetting.
Yes. Use the CSV button for spreadsheet-friendly output, or the PDF button to print or save a clean report for reviews, records, or handoffs.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.