Motor Calculators

PurposeCalculate motor shaft torque, mechanical power, RPM, angular velocity, horsepower, unit conversions, and operating-point comparisons.

InputVoltage / Current / Rating

OutputPower / Margin

PurposeCalculate brushed DC motor back EMF, armature current, winding voltage drop, speed, Ke, no-load estimates, and voltage budgets.

InputVoltage / Current

OutputValue / Margin

PurposeCalculate DC motor stall current, total series resistance, voltage drops, I²R loss, current-limit behavior, stall torque, and hot winding resistance.

InputVoltage / Current

OutputValue / Margin

PurposeConvert motor speed constant Kv, torque constant Kt, back-EMF constant Ke, and first-order speed or torque references.

InputEngineering parameters

OutputCalculated result

PurposeCalculate motor electrical input power, mechanical shaft output power, efficiency, total loss, loss breakdown, and operating-point comparisons.

InputVoltage / Current / Rating

OutputPower / Margin

PurposeCalculate motor winding I²R copper loss, phase loss, stepper phase loss, hot winding loss, allowed RMS current, and copper-loss share.

InputVoltage / Current

OutputValue / Margin

PurposeCalculate motor PWM average voltage, duty cycle, H-bridge bipolar voltage, PWM timing, back-EMF headroom, and resistive current reference.

InputVoltage / Current

OutputValue / Margin

PurposeCalculate motor encoder RPM, PPR, CPR, quadrature counts, count frequency, fixed-window counts, angular resolution, RPM resolution, and gearbox encoder references.

InputMarking / Code

OutputDecoded value

PurposeCalculate motor gearbox output RPM, output torque, required motor speed, required motor torque, gear teeth ratio, multi-stage ratio, efficiency, power balance, and gearbox loss.

InputVoltage / Current / Rating

OutputPower / Margin

PurposeCalculate stepper full steps, step angle, microstepping resolution, commanded angle, gearbox output resolution, leadscrew increment, and counts per millimeter.

InputEngineering parameters

OutputCalculated result

PurposeCalculate STEP command pulse frequency, pulse period, commanded RPM, gearbox output speed, leadscrew linear speed, and command-rate limits.

InputFrequency / Value

OutputImpedance / Frequency

PurposeCalculate BLDC and PMSM electrical frequency, electrical RPM, pole pairs, mechanical RPM, electrical period, six-step sector rate, and Hall transition references.

InputFrequency / Value

OutputImpedance / Frequency