Plan your network addressing. Enter an IP and CIDR (e.g., /24) to calculate:
- Network Address
- Broadcast Address
- First & Last Host IP
- Number of Usable Hosts
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IP Subnet Intelligence
Deep network parameter calculation and CIDR mask analysis engine
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About IPv4 Subnet Calculator
1
Enter IP
e.g., 192.168.1.1
2
Select Mask
e.g., /24
3
Review Results
Verify the output looks correct before using or downloading it.
4
Save Your Output
Click the download or copy button to export your results to your device or clipboard.
Key Features
CIDR Support
Supports /1 to /32 masks.
Real-time
Updates results as you type.
Frequently Asked Questions
The broadcast address is the last IP in the subnet range, used to communicate with all devices on that network.
CIDR (Classless Inter-Domain Routing) uses a suffix like /24 to indicate how many bits are used for the network identification.
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