RPM to Torque Calculator

Torque is a critical measurement in understanding the performance of any motor or engine. Whether you're working on an industrial machine, an electric motor, or a car engine, calculating torque from RPM (Revolutions Per Minute) is a fundamental task. To simplify this process, we have developed an easy-to-use RPM to Torque Calculator that lets users find torque effortlessly.

What is Torque and Why is it Important?

Torque is the rotational equivalent of linear force. It measures how much force is applied to rotate an object about an axis. The formula for torque calculation varies depending on the input parameters, such as power and RPM. Accurate torque calculations are essential for optimizing the performance and efficiency of machines, engines, and motors.

For a deeper understanding of how torque relates to engine performance, you can also explore our Engine Torque Calculator.

How to Calculate Torque from RPM?

The formula to calculate torque depends on the unit system (imperial or metric) you are using. Let’s break down the formulas:

For the Imperial System:

The formula to calculate torque in pound-feet (lb-ft) is:

Torque (lb-ft) = (5252 × Power (HP)) / RPM

For the Metric System:

The formula to calculate torque in Newton-meters (Nm) is:

Torque (Nm) = (Power (Watts) × 60) / (2 × π × RPM)

You can also convert between lb-ft and Nm using the conversion factor:

1 lb-ft = 1.355818 Nm

These formulas allow you to determine the torque when power and RPM values are known. However, if power is not available, estimating torque becomes challenging, but not impossible with approximate methods.

Explore more science and engineering tools in our Science and Engineering Calculators.

How to Use the RPM to Torque Calculator

Using the calculator is simple and requires just a few steps:

1. Select the unit system (imperial or metric).
2. Enter the power value in either HP (for imperial) or Watts (for metric).
3. Input the RPM value.
4. Click the "Calculate" button to get the torque.

Our calculator also provides conversions between lb-ft and Nm for your convenience.

Torque Calculation Table

Below is a table with example calculations for different power and RPM values:

Why Use Our Calculator?

The RPM to Torque Calculator is ideal for:

• Engineers optimizing motor performance.
• Automotive enthusiasts analyzing engine output.
• Hobbyists working on mechanical projects.

It eliminates the need for manual calculations and provides accurate results within seconds. For more practical tools, visit our homepage.

Final Verdict

Calculating torque from RPM is essential in various fields, from automotive to industrial machinery. Our RPM to Torque Calculator streamlines this process with its user-friendly interface and precise outputs. By using this tool, you can ensure that your calculations are accurate, saving time and effort.

Whether you’re designing an engine, analyzing motor performance, or exploring mechanics, our calculator is the perfect companion. Check out other calculators in our Science and Engineering category for more tools.

FAQs

How do I calculate torque without power?

To calculate torque without power, you need to know the force and radius:

Torque = Force × Radius

How much torque is at 1800 RPM?

The torque depends on the power. Using the formula, you can calculate it for a specific power value.

How do I convert kW to torque?

Convert kW to Watts (1 kW = 1000 Watts) and use the metric formula:

Torque (Nm) = (Power (Watts) × 60) / (2 × π × RPM)