Engineering Calculator HVAC

Engineering Calculator HVAC is a professional unit converter and engineering calculator designed for HVAC engineers, mechanical engineers, plumbers, and building services professionals. UNIT CONVERTER — 10 categories: • Pressure: Pa, kPa, MPa, kgf/m², kgf/cm², mmHg, mmH2O, bar, mH2O • Flow rate: m³/s, m³/min, m³/h, L/s, L/min, L/h • Power: W, kW, MW, kcal/h, Mcal/h, Gcal/h, BTU/h, hp • Energy: J, kJ, MJ, cal, kcal, BTU, kWh • Temperature: °C, °F, K • Length: mm, cm, m, km, in, ft • Area: mm², cm², m², km², in², ft² • Volume: mL, L, m³, cm³, gal, bbl • Mass: g, kg, t, lb, oz • Velocity: m/s, km/h, mph, knot ENGINEERING CALCULATORS — 5 tools: • Pipe Velocity — calculate water/fluid velocity and flow rate in pipes of various diameters • Thermal Power — compute heating/cooling power from flow rate and temperature difference, with antifreeze concentration support • Valve Pressure Drop — determine pressure loss through control valves using Kv coefficient • Expansion Tank — size membrane expansion tanks for heating and cooling systems • Insulation Area — calculate pipe insulation surface area for material estimation KEY FEATURES: • Clean Material Design 3 interface • Bilingual: English and Russian (auto-detect or manual switch) • Swap units with one tap • Instant conversion as you type • Works fully offline — no internet required • No ads, no in-app purchases • Lightweight and fast Perfect for daily engineering work, on-site calculations, project estimation, and quick reference. Built by an HVAC engineer for real-world use.