How to use the Subnet Calculator?
Enter an IP address and Subnet Mask (or CIDR notation) to calculate network details. Visualise binary IP data and determine usable host ranges for your network planning.
Free Network Subnet Calculator - IPv4 & CIDR
Calculate IPv4 subnets, CIDR notation, and masks instantly with our free Network Subnet Calculator. Trusted by IT professionals for accurate subnetting.
Network Address
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Binary:
Broadcast Address
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Binary:
Subnet Mask
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Wildcard: ...
Usable Hosts
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Class ...
Host Range
First IP
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Last IP
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CIDR Notation
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Binary Visualization
IP Address
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Subnet Mask
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Possible Subnets (Cheat Sheet)
| CIDR | Subnet Mask | Hosts |
|---|