Dev / IT

CIDR Calculator

Calculate subnet details from CIDR notation. Shows network address, broadcast, usable host range, subnet mask, and total host count. Essential for network engineers and cloud infrastructure work.

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how to use

  1. 1.Enter an IP address with CIDR prefix, e.g. 192.168.1.0/24
  2. 2.View the calculated subnet mask and network address
  3. 3.Check the usable host range and broadcast address
  4. 4.See total number of hosts in the subnet

frequently asked

What is CIDR notation?

CIDR (Classless Inter-Domain Routing) notation represents an IP address and its associated network mask, e.g. 192.168.1.0/24.

How many hosts can a /24 subnet hold?

A /24 subnet has 256 addresses, with 254 usable hosts (excluding network and broadcast addresses).