Decode 4-band, 5-band, and 6-band axial resistor color bands into resistance, tolerance, and PPM.

Calculate cutoff frequencies, resonant frequency, quality factor Q, damping ratio, phase shift, and attenuation across RC, RL, and RLC passive filters.

Calculate thermal efficiency, net heat rate, specific steam consumption, turbine work, and boiler heat duty for simple and reheat Rankine steam power cycles.

Calculate Rankine active and passive lateral earth pressure coefficients, lateral soil thrust, overturning moment, sliding factor of safety, and base bearing pressure.

Calculate pumped storage hydropower (PSH) net head, Darcy-Weisbach friction head loss, generating & pumping power, round-trip efficiency (RTE), and MWh storage.

Calculate driver/driven pulley diameters, output shaft RPM, and belt speed.

Calculate moist air enthalpy, dew point, wet-bulb temperature, humidity ratio, specific volume, and HVAC cooling/heating loads with interactive Psychrometric chart.

Interactive Psychrometric Chart and Moist Air Properties Calculator. Compute dry-bulb, wet-bulb, dew point, relative humidity, humidity ratio, enthalpy, and specific volume.

Calculate friction head loss and pressure drop in fluid piping using Darcy-Weisbach.

Calculate real (kW), apparent (kVA), and reactive (kVAR) power and correction capacitor size.