IP Subnet Calculator 🌐
Instantly calculate IPv4 subnets, network addresses, and host ranges.
Network Details
IP Address:
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Network Address:
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Usable Host Range:
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Broadcast Address:
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Total Usable Hosts:
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Subnet Mask:
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How to Use the Subnet Calculator?
- Enter IP Address: Type your target IPv4 address in the first box (e.g., 192.168.1.10).
- Select CIDR: Choose the appropriate Subnet Mask / CIDR notation from the dropdown menu (e.g., /24 for a standard local network).
- Calculate: Click the button to instantly generate your Network Address, Broadcast Address, and the exact range of Usable IPs for your server setup or router configuration.
Frequently Asked Questions (FAQ)
What is a Subnet Mask?
A subnet mask is a 32-bit number that masks an IP address and divides the IP address into network address and host address. It helps in identifying the network structure.
What does CIDR mean?
CIDR stands for Classless Inter-Domain Routing. It is a method for allocating IP addresses and IP routing. The /24 notation means the first 24 bits are the network part.
Is this tool secure?
Yes, 100% secure. All calculations are processed locally in your browser using JavaScript. We do not store or track any network configurations you test here.