Comprehensive Motor and Vehicle Calculator

Motor Sizing

Determine the right motor power for your vehicle by considering weight, desired speed, incline, rolling resistance, etc.

Vehicle Weight

Tyre Diameter

Desired Speed (auto)

Incline (Slope)

Rolling Resistance (RR)

Acceleration (m/s²)

Optional Gearing

Gear Ratio (Drive:Driven)

Motor Speed (RPM, Optional)

Motor Current & Power

Enter at least two of: Voltage, Current, Torque, Speed, or Power to calculate the missing ones.

Motor Type

Voltage

Current (A) (auto)

Torque

Speed (RPM)

Power (auto)

Motor Snubber

Calculate snubber components to protect your motor from voltage spikes.

Snubber Type RC Snubber RCD Snubber

Capacitance (C)

Resistor (R)

Spike Voltage V

Spike Frequency (optional)

Controller Load

Calculate the total electrical load for your motors.

Input Method: Voltage & Current Power

Motor Type

Soft Start Available

Number of Motors

Single Motor Current (A)

Single Motor Voltage

Transmission Efficiency

Estimate the overall efficiency and gear ratio of your transmission system.

Transmission Type

Gear Type (if Gears)

Number of Stages

Ratio Input Method

Output Power Required (optional)

Power, Torque & Speed

Enter any two of Power, Torque, and Speed to find the third.

Power

Torque

Speed (RPM)

Wheel Speed Calculator

Provide any three of Motor Speed, Gear Ratio, Wheel Diameter, and Wheel Speed to calculate the fourth.

Motor Speed (RPM)

Gear Ratio (Drive:Driven)

Wheel Diameter

Wheel Speed (auto-calc)

Controller Recommendation

Find the right controller for your motors based on their specifications.

Motor Type

Soft Start Available

Motor Voltage V

Motor Power

Number of Motors

Startup Current Multiplier

Overload Duration (seconds)

Wire Length & Thickness

Estimate the voltage drop and heating in your wires based on your inputs.

Supply Voltage Must be >0

Current (A) Must be >0

Wire Length Must be >0

Wire Thickness Must be >0

Battery Range

Estimate how far your vehicle can travel on a full battery charge.

Battery Type

Battery Voltage V

Battery Capacity (Ah)

Energy Consumption (Wh/km)

Motor Information (if Energy Consumption is Unknown)

Motor Power

Average Speed (km/h)

Motor Efficiency (%)

Total Vehicle Weight (kg)

The Ultimate Motor Sizing, Current & Power, Snubber, Load, Efficiency, Torque, Wheel Speed, Wire Thickness, Resistance Calculator!

Motor Sizing

Optional Gearing

Motor Current & Power

Motor Snubber

Controller Load

Transmission Efficiency

Power, Torque & Speed

Wheel Speed Calculator

Controller Recommendation

Wire Length & Thickness

Battery Range

Motor Information (if Energy Consumption is Unknown)