Calc Forge

Calc Forge is an open-source platform that provides free web-based engineering calculators, construction datasets, and professional training for civil, mechanical, electrical, and structural engineers. Built by a community of chartered civil engineers, university researchers, and site-based contractors, the platform aims to democratize access to engineering knowledge and help professionals automate time-consuming calculation tasks. Over 1.4 million users have used Calc Forge resources to solve real engineering problems across the construction and infrastructure industries.

Key Features

• 30+ free engineering calculators covering structural, geotechnical, tunnelling, and contractor domains, including beam analysis, 2D/3D frame analysis, truss analysis, steel and concrete section design, slope stability, retaining wall analysis, foundation settlement, and tunnel design tools.
• 10,000+ construction datasets for high-rise buildings, bridges, tunnels, dams, and residential housing projects, enabling engineers to search for similar completed projects.
• Open-source Python packages available on GitHub under the MIT License, allowing users to inspect, modify, and extend the calculation logic.
• Training certification programs in Python for civil engineering, AI for construction, and building AI agents for construction, designed to upskill industry professionals.
• Community-driven Discord server with 600+ members where engineers collaborate on new calculator development and share knowledge.

Use Cases

• Structural engineers performing quick beam, frame, and truss analyses for initial design checks and feasibility studies without installing specialized software.
• Geotechnical engineers calculating bearing capacity, slope stability, retaining wall stability, and braced or anchored excavation support.
• Tunnelling professionals estimating tunnel settlement, mined tunnel support requirements, pipe jacking thrust forces, tunnel carbon emissions, and project costs.
• Civil engineering students and academics learning structural analysis concepts through interactive web-based calculators with transparent open-source code.

Integrations and Community

Calc Forge is developed by Civils.ai PTE LTD and integrates with GitHub for source code management. The platform encourages contributions via pull requests and community collaboration through its Discord server. Engineering professionals can register for free access to a limited set of tools, with a lifetime all-access plan available as a one-time payment that unlocks the full calculator library, all training qualifications, datasets, and code repositories.

Pricing

Calc Forge offers a free tier with limited engineering tools and access to construction datasets. A lifetime all-access plan is available as a one-time payment, providing full access to 30+ pre-built engineering tools, all four training certification programs, 10,000+ construction datasets, and eight code repositories. The platform funds its ongoing development primarily through these training course enrollments and community contributions.