# Maximum Torque Calculator, Formula, Maximum Torque Calculation

## Maximum Torque Calculator:

Enter the values of horsepower, HP and rotational speed in revolution per minute to determine the value of maximum torque, Tmax(ft.lbs).

 Enter Horsepower: Enter Rotational Speed: RPM Result – Maximum Torque: ft.lbs

## Maximum Torque Formula:

Maximum torque, often denoted as Tmax is a critical parameter in the performance evaluation of engines and motors. It represents the highest torque output that an engine or motor can produce and is directly related to the power output and the speed at which that power is delivered.

Maximum torque, Tmax(ft.lbs) in foot pounds is equated by dividing the product of 5252 and horsepower, HP by rotational speed in revolutions per minute, RPM.

Maximum torque, Tmax(N.m) = 5252 * HP / RPM.

Tmax(ft.lbs) = maximum torque in foot pounds, ft.lbs.

HP = horsepower,

RPM = rotational speed in revolutions per minute.

Maximum Torque Calculation:

1. Given an engine with a power output of 300 HP operating at 5000 RPM, calculate the maximum torque.

Given: HP = 300, RPM = 5000.

Maximum torque, Tmax(ft.lbs) = 5252 * HP / RPM.

Tmax(ft.lbs) = 5252 * 300 / 5000

Tmax(ft.lbs) = 315.12ft.lbs.

1. If a desired maximum torque is 400 ft.lbs at a rotational speed of 2500 RPM, calculate the required horsepower.

Given: Tmax(ft.lbs) = 400ft.lbs, RPM = 2500.

Maximum torque, Tmax(ft.lbs) = 5252 * HP / RPM.

HP = Tmax(ft.lbs) * RPM / 5252

HP = 400 * 2500 / 5252

HP = 190.48.