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.