Project Engineer puts a complete engineering reference in your pocket, 240+ professional calculators with clear inputs and results you can actually trust.

Built for practising engineers, students and technicians who need a fast, reliable answer in the field, on site, or at the desk.

240+ CALCULATORS ACROSS EVERY MAJOR DISCIPLINE
- Structural: beam deflection, bending & shear, steel (AISC) and reinforced concrete (ACI 318) design, buckling, connections, wind & seismic loads (ASCE 7)
- Geotechnical: bearing capacity, settlement, slope stability, retaining walls, pile capacity, soil classification
- Hydraulics & Hydrology: Manning, Hazen-Williams, Darcy-Weisbach, open channels, culverts, weirs, pumps, rational method, hydrographs
- Water resources & environmental: flood frequency, detention routing, water quality, dispersion
- Transportation: sight distance, horizontal/vertical curves, pavement (AASHTO), traffic signals
- Mechanical & thermodynamics: cycles, heat transfer, psychrometrics, pressure vessels
- Electrical: Ohm's law, cable sizing, transformers, motor starting, battery (IEEE 485), short circuit (IEC 60909)
- Building science & HVAC: heat loss/gain, duct sizing, U-value/R-value, lighting

GROUNDED IN RECOGNISED STANDARDS
Calculations reference widely used codes and methods including ACI 318, AISC, ASCE 7, AASHTO, Eurocode 2, IEEE 485, IEC 60909 and more, so you can show your working with confidence.

DESIGNED FOR CLARITY
- Clean, distraction-free interface
- Clearly labelled inputs and easy-to-read results
- Switch instantly between metric and imperial units
- Save your results and favourite the calculators you use most

SUBSCRIPTION
Project Engineer is free to download with a selection of calculators. Pro and Premium subscriptions unlock the full library and advanced tools. Subscriptions are billed through Google Play and renew automatically unless cancelled. You can manage or cancel anytime in your Google Play subscriptions settings.

Terms of Use and Privacy Policy links are available in the app and on this store listing.

Questions or feedback? Contact us at contact@projectengineer.app, we're actively adding calculators and improvements.