Engineering calculations that show their work — free, in your browser
Unit-aware math that shows every step and recomputes when your inputs change. A free Mathcad alternative that runs in your browser — and stays connected to your FEA, docs, and code.
Calculations shouldn't be a black box
Traditional engineering calculation software won't connect to your other tools. A spreadsheet can't handle units. A calculator gives you a number with no trail. And the tools that do show the work, like Mathcad, lock it behind a per-seat license and a file format you can't share.
You shouldn't have to choose between seeing the work and being able to share it — or between handling units correctly and paying for the privilege.
Actually useful AI
The assistant works on the calculation with you — it answers questions, flags a unit that doesn't line up or an assumption that looks off, and takes the clerical parts off your plate. It doesn't try to do the engineering for you; engineering is an art, and AI that pretends otherwise is just annoying. It stays out of the way until you want it.
What WORC calculations do
- Unit-aware — set your units and WORC carries and converts them through the math. A dimensional mistake surfaces instead of hiding.
- Shows its work — every step is on the page, like an engineering notebook, not buried in a cell.
- Live — change an input and everything downstream recomputes with it.
- Shareable — send a link to your work. No locked file format, no "you need the software to open it."
What spreadsheets can't do
Your calculations don't live alone. In WORC they feed your FEA, your code, and the document you hand off — all in one workspace, all updating together. That's the difference between old calculation tools and ours.
A free Mathcad alternative
If you're looking for a free Mathcad alternative, WORC is free to use, runs in your browser, and needs no install and no login to start. No per-seat license. No file you can only open in one program. You only pay when you want additional assistant usage, accelerated compute, or enterprise features.
More of what WORC does:
The connected workspace Free FEA in your browser WORC for students
Mathcad is a trademark of PTC Inc. WORC is not affiliated with or endorsed by PTC.