What is CalcpadCE?

CalcpadCE is an open-source tool for mathematical and engineering calculations. Write your formulas in a simple, readable syntax and get beautifully rendered output with plots, diagrams, and formatted results — all in real time. For Desktop, Web and Visual Studio Code.

This is a fork of the now closed-source Calcpad (March 2026).

View Documentation Quick Reference

CalcpadCE showing an elastic slab analysis with code on the left and rendered output with deflection and bending moment plots on the right

Get Calcpad for Your Desktop

Calcpad Desktop (Windows)

The last open-source release of the original Calcpad desktop application. A fully featured Windows app for mathematical and engineering calculations.

Download for Windows

CalcpadCE for Visual Studio Code

The community-driven Visual Studio Code extension bringing Calcpad to your favorite editor. Cross-platform, actively developed, and open source.

Get VSC Extension

Join the Community

CalcpadCE is built by engineers, for engineers. Get involved, ask questions, or help shape the future of the project.

Contribute on GitHub

Browse the source code, report issues, submit pull requests, or star the project to show your support.

View repository

Join the Discord

Ask questions, share your work, get help from other engineers, and chat with the development team in real time.

Join server

Forum & Discussions

Start or join longer-form conversations about features, ideas, best practices, and the future direction of CalcpadCE.

Browse discussions

What Happened to the Original Calcpad?

Following a shift to a closed-source model by its original creator, the public GitHub repository for Calcpad was taken offline.

Our community stepped up to fork the project and continue its open-source development. We restored the final open-source release to officially launch CalcpadCE as a free, community-driven continuation of the software.

Our collective goal is to maintain and grow this incredible tool, ensuring it remains freely available for the professionals who rely on it.

As we evolve the software, we are improving the core language by adding features like strings and keyword arguments to simplify complex coding. We are also focused on modernizing the overall development experience with enhanced tooling, including dedicated editor extensions.

Whether you want to contribute code, report issues, or simply spread the word — we invite you to join us and help CalcpadCE thrive!