IP Range Calculator is a browser-based VLSM and subnet planning tool designed to demonstrate automatic IP range allocation using modern web technologies. The project uses vanilla JavaScript to calculate subnets directly in the browser, without requiring additional software installation or a dedicated backend for computation.
Note
IP Range Calculator provides two main input flows:
- Base Network — Define the base network (e.g.,
192.168.1.0/24). - Network Requirements — Add networks with the required host count for each.
The tool automatically allocates subnets using VLSM (Variable Length Subnet Masking) and displays the network address, subnet mask, usable host range, and broadcast address for each network.
- HTML5
- CSS3
- JavaScript (ES Modules)
- Firebase
- GitHub
- Browser-based VLSM allocation
- Automatic subnet calculation based on host requirements
- Network, mask, usable range, and broadcast display
- Light / Dark theme toggle
- Real-time results
- Fully responsive interface
- 100% client-side — no data leaves your browser
Tip
Live Demo: https://iprangecalculator.web.app/
Project Title: IP Range Calculator — VLSM & Subnet Planner IP Range Calculator is developed as a practical tool for exploring automatic subnet allocation and VLSM planning directly within modern web browsers.
This project is licensed under the MIT License. See the LICENSE file for details.