CalcForge
Free open-source calculators for civil, mechanical and electrical work
What CalcForge is
A free, open-source station of engineering calculators. Structural, geotechnical, tunnel and construction calculators sit together, along with engineering datasets and a Python collaboration entry point.
It is built for quick checks, scheme comparison and learning rather than formal design sign-off.
What you can do with it
- Run beam, 2D frame, 3D structural and truss calculations
- Estimate bearing capacity, pile length, slope stability and retaining walls
- Work through tunnel settlement, mining tunnel and pipe jacking cases
- Estimate tunnel and formwork or scaffold costs
- Pull example datasets instead of building scripts from scratch
Who it is for
- Civil, mechanical and electrical engineers
- AEC students and learners
- Teams wanting a fast sanity check on a number
What to watch out for
- Engineering results depend on codes, load assumptions and local regulations
- Use it for learning, estimates and scheme discussion; formal construction drawings, bearing capacity decisions and contractual judgements need a qualified engineer
- Check which calculators are mature, since coverage varies
Pros & cons
✓ What we like
- Free and open source
- Broad coverage across engineering disciplines
- Useful for quick checks and learning
- Datasets and Python support
! What to watch out for
- Not a substitute for formal design review
- Assumptions and code compliance are on you
FAQ
Is this an AI tool or a calculator?
Primarily an engineering calculator suite, with AI and training material mentioned alongside.
Is it free?
Yes. It is described as a free open-source tool station.
Can I use it for formal design?
No. Formal drawings, capacity judgements and contract decisions need review by qualified engineering personnel.
Last reviewed: 2026-09-15
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