MotorsAvailable
Motor Torque, Power & Speed Calculator
Calculate motor shaft torque, mechanical power, RPM, angular velocity, horsepower, unit conversions, and operating-point comparisons.
Calculator category
Motor Calculators
Engineering calculators for DC motors, stepper motors, BLDC motors, speed, torque, power, gearing, and motion systems.
Available Calculators
12
Engineering Applications
4
Calculators
Each listed tool links to a working calculator with engineering inputs, formulas, examples, notes, and related resources.
MotorsAvailable
DC Motor Back EMF Calculator
Calculate brushed DC motor back EMF, armature current, winding voltage drop, speed, Ke, no-load estimates, and voltage budgets.
MotorsAvailable
DC Motor Stall Current Calculator
Calculate DC motor stall current, total series resistance, voltage drops, I²R loss, current-limit behavior, stall torque, and hot winding resistance.
MotorsAvailable
Motor Kv & Kt Calculator
Convert motor speed constant Kv, torque constant Kt, back-EMF constant Ke, and first-order speed or torque references.
MotorsAvailable
Motor Efficiency Calculator
Calculate motor electrical input power, mechanical shaft output power, efficiency, total loss, loss breakdown, and operating-point comparisons.
MotorsAvailable
Motor Copper Loss Calculator
Calculate motor winding I²R copper loss, phase loss, stepper phase loss, hot winding loss, allowed RMS current, and copper-loss share.
MotorsAvailable
Motor PWM Average Voltage Calculator
Calculate motor PWM average voltage, duty cycle, H-bridge bipolar voltage, PWM timing, back-EMF headroom, and resistive current reference.
MotorsAvailable
Motor Encoder RPM Calculator
Calculate motor encoder RPM, PPR, CPR, quadrature counts, count frequency, fixed-window counts, angular resolution, RPM resolution, and gearbox encoder references.
MotorsAvailable
Motor Gear Ratio & Output Calculator
Calculate motor gearbox output RPM, output torque, required motor speed, required motor torque, gear teeth ratio, multi-stage ratio, efficiency, power balance, and gearbox loss.
MotorsAvailable
Stepper Motor Steps & Resolution Calculator
Calculate stepper full steps, step angle, microstepping resolution, commanded angle, gearbox output resolution, leadscrew increment, and counts per millimeter.
MotorsAvailable
Stepper Motor Pulse Frequency Calculator
Calculate STEP command pulse frequency, pulse period, commanded RPM, gearbox output speed, leadscrew linear speed, and command-rate limits.
MotorsAvailable
BLDC Electrical RPM & Frequency Calculator
Calculate BLDC and PMSM electrical frequency, electrical RPM, pole pairs, mechanical RPM, electrical period, six-step sector rate, and Hall transition references.
How to Use These Calculators
Start From the Engineering Question
Choose the calculator that matches the decision you need to make: decode a component marking, size a value, check a frequency response, estimate loss, or verify a safety margin. A category page is useful only when it helps you reach a working tool, so this page lists released calculators only.
Check Units and Assumptions
Calculator results depend on unit choices, idealized formulas, tolerance, temperature, frequency range, and component limitations. Review the formula and engineering notes on each calculator page before using the result in a schematic, BOM, or PCB layout.
Validate Against Real Parts
Use the calculated value as a design reference, then confirm it against datasheets, derating curves, layout parasitics, measurement conditions, and manufacturer limits. The related guides below provide background when a calculation needs more context.
Engineering Applications
DC motors
Stepper motors
BLDC drives
Motion systems
Related Engineering Guides
Engineering Guide
Stepper Pulse Scheduling: Acceleration, Microstepping, Timing, and Missed Steps
Translate stepper speed and microstep targets into driver-safe pulses, acceleration ramps, torque checks, and verified motion.
10 min · Intermediate
Engineering Guide
Measuring Motor Kv, Kt, and Ke: Bench Methods and Datasheet Conventions
Extract motor constants from speed, generated voltage, current, and torque measurements while controlling convention and temperature errors.
10 min · Intermediate
Engineering Guide
Motor Thermal Duty-Cycle Design: RMS Current, Copper Loss, Efficiency, and Validation
Design motor duty cycles with RMS current, hot winding resistance, complete loss budgets, efficiency maps, thermal transients, derating, and measured validation.
18 min · Advanced
Engineering Guide
DC Motor Startup and Stall Protection: Current Limiting, Jam Detection, and I²t
Protect DC motor systems across startup transients, current limiting, supply sag, jam detection, I²t accumulation, layered shutdown, and verification.
18 min · Advanced
Engineering Guide
Motor Driver and H-Bridge Design: PWM, Current Paths, Braking, and Protection
Design motor H-bridge power stages across startup current, PWM states, recirculation, braking energy, semiconductor loss, protection, layout, and verification.
19 min · Advanced
Engineering Guide
Motor Motion Control: Encoders, Gear Ratio, Stepper Resolution, and BLDC Frequency
Connect encoder counts, gear ratios, stepper resolution, command pulse rate, and BLDC electrical frequency in practical motion-control workflows.
20 min · Intermediate
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