Subnet Calculator
Calculate subnet mask, network address, broadcast address, and host range from IP and CIDR. Free online subnet calculato
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How to Use Subnet Calculator
- Enter IP and CIDR: Type an IP address with CIDR notation (e.g., 192.168.1.0/24).
- View subnet details: The tool calculates network address, broadcast address, subnet mask, first/last usable IP, and total hosts.
- Use for network planning: Essential for cloud engineers configuring VPCs, network architects, and system administrators.
About Subnet Calculator
Subnet Calculator simplifies the complex calculations required to divide a range of IP addresses into smaller networks (subnets).
- CIDR Support: Enter an IP along with a subnet mask (e.g., /24) to calculate the entire range.
- Network Details: Instantly outputs the Network Address, Broadcast Address, First Usable IP, and Last Usable IP on screen.
- Hosts Count: Tells you the maximum number of devices (computers/phones) that can connect to this subnet.
Essential for cloud engineers (AWS/Azure) and network architects configuring VPCs and routers.
Frequently Asked Questions
What is a subnet?
A subnet is a logical division of an IP network. Subnetting allows you to split a large network into smaller, more manageable segments.
What is CIDR notation?
CIDR (e.g., /24) indicates how many bits are used for the network portion of an IP address. /24 means 256 addresses with 254 usable hosts.
What information does the calculator provide?
It shows network address, broadcast address, subnet mask, first/last usable IP, total hosts, and wildcard mask.