Stall Torque Calculator

Stall Torque Calculator calculator can be used to calculate the stall torque of a motor based on its current, voltage, and efficiency parameters.

Input Parameters

Calculation Results

Calculation Formula

Stall Torque (T) = (Current × Voltage × Efficiency) / 9.549

Where:
Current = Motor current in Amps
Voltage = Motor voltage in Volts
Efficiency = Motor efficiency as percentage
9.549 = Conversion factor (Nm per Watt)

Stall Torque Result

0.00 Nm

Stall Torque in Newton-meters (Nm)

Stall Torque Calculator Calculator Usage Guide

Learn how to use the Stall Torque Calculator calculator and its working principles

How to Use the Calculator

  1. Enter the motor current in Amps (the current drawn by the motor when it is stalled).
  2. Enter the motor voltage in Volts (the operating voltage of the motor).
  3. Enter the motor efficiency as a percentage (typically between 70-95% for most motors).
  4. Click the "Calculate" button to compute the stall torque.
  5. The result will be displayed in Newton-meters (Nm).

Understanding Stall Torque

Stall torque is the maximum torque that a motor can produce when it is not rotating (stalled). It is an important parameter for selecting motors for applications where high torque is needed at low or zero speed, such as in electric vehicles, robotics, and industrial machinery.

Principle of Calculation

The stall torque is calculated using the formula:

T = (I × V × η) / 9.549

Where:

  • T = Stall Torque (Nm)
  • I = Motor Current (Amps)
  • V = Motor Voltage (Volts)
  • η = Motor Efficiency (%)
  • 9.549 = Conversion factor to convert watts to newton-meters

Applications

This calculator is useful for:

  • Engineers selecting appropriate motors for their applications
  • Designing drive systems that require high starting torque
  • Evaluating motor performance under load conditions