IP Subnet Calculator - calculatorsee.com


IP Subnet Calculator

Comprehensive CIDR prefix, wildcard mask, binary network boundary, and broadcast address solver for network engineers.

Calculator Inputs

IP address.
CIDR prefix.

Calculated Results

Usable Host Range
10.0.0.1 – 10.0.0.254
Subnet Mask 255.255.255.0 (/24)
Wildcard Inverse Mask 0.0.0.255
Broadcast Address 10.0.0.255
Values calculate live as you adjust inputs.

About IP Subnet Calculator

Computes IPv4 network ID, wildcard mask, and host capacity for network architecture.

What is IP Subnet Calculator?

Computes IPv4 network ID, wildcard mask, and host capacity for network architecture.

How to Use This Calculator

  1. Enter IP and select CIDR prefix.

The Mathematical Formula & Variables

Hosts = 2^(32 - CIDR) - 2

Step-by-Step Worked Example

Scenario: 10.0.0.45/24.

  1. Network = 10.0.0.0, Broadcast = 10.0.0.255, Usable = 10.0.0.1 - 10.0.0.254.

Result: 254 Hosts

Frequently Asked Questions

What is a wildcard mask?

A wildcard mask is the bitwise inverse of the subnet mask, used in Cisco access control lists (ACLs).