PhDino

PhDino Calc 95 is a free, online suite of 97 engineering calculators covering 13 disciplines, including structural, mechanical, electrical, and geotechnical engineering, civil and construction materials, chemistry, solar and renewable energy, manufacturing and machining, aerospace, biomedical, motorsport, and digital logic.

The software has a vintage Windows 95 interface with movable windows. Each calculator is multifunctional, computing results instantly as you input data, generating live schematic diagrams that adjust according to inputs, and providing links to wiki articles that explain the formula, variables, assumptions, and standards. Standards like AISC, ACI, NEC, ASHRAE, and others are referenced.

PhDino Calc 95 supports both imperial and metric units, with the option for per-field unit modifications. Results can be stored in a Notebook and exported to a PDF. It also offers 11 project guides that align calculators in the order required for real-world tasks, allowing for the transfer of values from one step to the next.

The software operates within your browser, requires no account or personal data, and is ad-supported. The formulas used are simplified and suitable for teaching, quick checks, estimations, and learning, but are not intended to replace the expertise of a licensed engineer or dedicated design software.