IP Subnet Calculator
Calculate subnet mask, network address, broadcast address, host range, and number of usable hosts for any CIDR notation.
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Calculator insights
What this calculator does
IP Subnet Calculator helps you quickly estimate calculate subnet mask, network address, broadcast address, host range, and number of usable hosts for any cidr notation. with clean output and clear next steps.
How the calculation works
Enter IP Address, CIDR / Prefix Length and this calculator uses standard formulas to determine Network Address and Broadcast Address. The output is displayed immediately in a user-friendly format.
Example calculation
For example, enter realistic values into the IP Subnet Calculator to see how the calculator produces Network Address and Broadcast Address that you can use for planning and comparison.
Disclaimer
The calculations provided by this website are for informational purposes only and should not be considered financial, legal, tax, or professional advice.
Frequently Asked Questions
What is a /24 subnet?
A /24 subnet (255.255.255.0) gives 254 usable host addresses (256 total minus network and broadcast). Commonly used for home and office LANs.