Free Online IP Subnet Calculator for IPv4 Networks

Calculate Your IP Subnet Details

Please enter a valid IP address.
Please enter a CIDR prefix between 0 and 32.

Quickly calculate crucial IPv4 subnet details including network address, broadcast address, subnet mask, host range, and total usable hosts for any IP address and CIDR prefix. Our intuitive IP Subnet Calculator simplifies complex network planning, helps you master CIDR concepts, and enhances your overall networking efficiency. An essential tool for IT professionals, network administrators, and students.

Formula:

This calculator efficiently determines key subnetting information from an IP Address and a CIDR Prefix. It computes the Network Address (the first address of the subnet), Broadcast Address (the last address of the subnet), the corresponding Subnet Mask, the First and Last Usable Host IP addresses, and the Total Number of Usable Hosts available within the specified subnet. Additionally, it provides the Wildcard Mask and binary representations for a comprehensive network analysis.

Networking and Tools

<b>90 Day </b>: Instantly Find Dates 90 Days From Today or Any Given Date

Go to Calculator

<b>Labor Force Participation Demographic Gap </b>: Compare Workforce Engagement Rates

Go to Calculator

1/4 Mile ET : Estimate Your Quarter Mile Elapsed Time

Go to Calculator

12 Volt Wire Size : Optimize Your DC Circuit Design

Go to Calculator

16:9 Aspect Ratio : Find Widescreen Dimensions

Go to Calculator

180 Day : Easily Find Dates 180 Days Forward or Back

Go to Calculator