MEP Toolbox

MEP Toolbox is the ultimate engineering companion for MEP (Mechanical, Electrical, and Plumbing) professionals. Built by Engineers House, this all-in-one tool brings 31 unit converters, 25 engineering calculators, and 14 interactive reference tools to your phone. UNIT CONVERTERS (31 categories) - Length, Area, Volume, Flow Rate, Pressure, Temperature, Power/Cooling, Energy, Velocity, Mass, Density, Electrical, Illuminance, Luminous Flux, Thermal Conductivity, Heat Transfer Coefficient, Dynamic & Kinematic Viscosity, Torque, Electrical Current, Voltage, Resistance, Rotational Speed, Specific Heat & Enthalpy, Thermal Resistance (R-value), Mass Flow Rate, Humidity Ratio, Acoustic/Sound, Fuel Consumption. MEP CALCULATORS (25 tools) HVAC: Cooling Load, Heating Load, Chiller Tonnage, Fan Laws, Duct Pressure Drop, Duct Sizer, ACH, Pump Head, Cooling Tower, Psychrometric, Duct Equivalent Diameter Plumbing: Fixture Unit, Hot Water Demand, Drainage Pipe, Water Heater, Pipe Sizing, Pressure Drop Electrical: Voltage Drop, Cable Sizing, Transformer, Lighting Power Density, Conduit Fill, Short Circuit, Electrical Load Fire Protection: Sprinkler Hydraulic, Sprinkler Coverage REFERENCE TOOLS (14 interactive) - Pipe Sizes (ASME B36.10M), Wire Ampacity (NEC 310.16), Insulation Selector, Motor FLA + NEMA Frame, Refrigerant P-T Properties, Copper Tube Selector, Steel Pipe Schedules, Duct Sizes & Weights, Circuit Breaker Sizing, ASHRAE Design Conditions (40 cities), NC Rating Calculator, Valve Cv/Kv Sizing, NFPA Sprinkler Design, Fitting Equivalent Length KEY FEATURES - SI and Imperial toggle on every input - Command palette for quick search - Clean, professional interface - Works offline - No ads, no tracking, no subscriptions Built by Engineers House for MEP engineers, HVAC technicians, electrical designers, plumbing engineers, and engineering students.