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Subnet Calculator

An interactive IPv4 subnet calculator that helps users quickly determine subnet details such as network and broadcast addresses, usable host ranges, and more. Supports both CIDR and traditional subnet mask formats, with real-time binary visualization for better understanding of IP addressing.

How to Use

1. Enter IP Address

Input an IPv4 address in the format: xxx.xxx.xxx.xxx

Example: 192.168.1.1

2. Specify Subnet Mask

Enter either:

  • CIDR notation (e.g., /24)
  • Subnet mask (e.g., 255.255.255.0)

Calculator