IP Subnet Calculator
Options
Status
Idle
Subnet summary
IP class
Address type
Network address
Broadcast address
Subnet mask
Wildcard mask
First usable host
Last usable host
Total addresses
Usable hosts
Binary view
Binary IP
Binary subnet mask
What is an IP Subnet Calculator?
An IP Subnet Calculator helps you calculate the network details of an IPv4 address and CIDR block.
It is useful for networking, DevOps, server setup, firewall rules, cloud infrastructure, and troubleshooting address ranges.
How to use the IP Subnet Calculator
- Enter an IPv4 address and CIDR, such as 192.168.1.10/24.
- You can also fill the IP and CIDR fields separately.
- Click Calculate to see the network address, broadcast, subnet mask, and usable range.
- Copy the summary output if needed.
Tips
- A /24 network usually has 256 total addresses and 254 usable hosts.
- A /32 represents a single IPv4 address.
- A /31 is often used for point-to-point links.
- The wildcard mask is useful for ACL and router configurations.
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IP Subnet Calculator FAQ
Can this tool calculate broadcast and subnet mask?
Yes. It calculates network address, broadcast address, subnet mask, wildcard mask, and host range.
Does it support IPv6?
This version focuses on IPv4 subnet calculations.
What is the difference between total and usable hosts?
Total addresses include network and broadcast addresses, while usable hosts usually exclude them in standard IPv4 subnets.
Is my IP stored?
No. Everything is processed in your browser.