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IP Subnet Calculator

Enter an IPv4 address with CIDR notation (for example 192.168.1.10/24) and get the network address, broadcast address, subnet mask, first and last usable host, and how many usable hosts the subnet has.

\u2014Network address
\u2014Broadcast address
\u2014First usable host
\u2014Last usable host
\u2014Usable hosts
\u2014Subnet mask

How to use

  1. Enter an IP address in CIDR form, e.g. 192.168.1.10/24.
  2. Click Calculate.
  3. Read the network, broadcast and host range below.

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