Heat Transfer Rate (Conduction and Convection) Calculator
Calculates total heat transfer rate Q = ΔT / R_total through a wall with a conduction resistance R_cond = L/(kA) and two...
Kinematics, dynamics, and classical-physics shortcuts.
Solve the common physics textbook calculations — velocity, acceleration, force, and energy — with units correctly tracked end to end.
Calculates total heat transfer rate Q = ΔT / R_total through a wall with a conduction resistance R_cond = L/(kA) and two...
Calculates the quantities (bags of cement, sand, and aggregate) needed for 1 m³ of concrete from a nominal mix ratio suc...
Calculates minimum pipe wall thickness using the ASME Barlow / B31 formula from design pressure, pipe outer diameter, al...
Calculates effort force E = Load/MA = Load × d_load/d_effort using the lever principle. Shows mechanical advantage, velo...
Estimates motor starting (locked-rotor) current from rated kW, voltage, full-load current, and starting current multipli...
Calculates NTU, heat transfer effectiveness, and actual heat duty for a counterflow heat exchanger from UA, flow rates,...
Calculates the Carnot COP for a heat pump COP_HP = T_H/(T_H−T_C) and for a refrigerator COP_R = T_C/(T_H−T_C). Also show...
Calculates thermal efficiency, net work output, and heat input of an ideal Rankine steam cycle from turbine and pump wor...
Calculates impedance, inductive reactance, capacitive reactance, and phase angle for a series RLC circuit at a given fre...
Calculates the required series resistor: R = (V_supply − V_f) / I_f, where V_f is LED forward voltage (~2.0–3.5 V) and I...
Calculates the reactive power compensation needed and capacitance required to correct a lagging power factor to a target...
Calculates motor shaft torque from power and rotational speed. Also outputs angular velocity ω in rad/s. Essential for m...