IP Calculator Extension

A clean, modern browser extension for calculating IPv4 and IPv6 subnet details. Built for network engineers, developers, and students who need quick and accurate IP calculations properly styled for your browser.

Features

• Dual Mode Support: Seamlessly switch between IPv4 and IPv6 calculations.
• Detailed Output:
  • IPv4: Netmask, Wildcard, Network Address, Broadcast Address, Host Range (Min/Max), and Total Usable Hosts.
  • IPv6: Compressed & Expanded Address, Network Prefix, Prefix Length, Total Hosts, and full Range (Start/End).
• Smart Inputs:
  • Split fields for IP Address and CIDR for clarity.
  • Interactive validation.
• Productivity Focused:
  • Click-to-Copy: Click any result field to instantly copy the value to your clipboard.
  • Visual Feedback: Green flash confirmation on copy.
  • Clean UI: Modern, segmented control layout with a focus on readability.

Installation

Download for Chrome
Download for Firefox

Usage

1. Click the extension icon to open the popup.
2. Select IPv4 or IPv6 using the toggle at the top.
3. Enter an IP Address (e.g., 192.168.1.1 or 2001:db8::1) and a CIDR suffix (e.g., 24 or 64).
4. The results will calculate automatically as you type.
5. Click on any result field (like Netmask or Network) to copy it to your clipboard.

Technologies

• HTML5 & CSS3 (CSS Variables, Flexbox, Grid)
• Vanilla JavaScript (ES6+)