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Gas Strut Calculator

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A Gas Strut Calculator is a handy tool designed to simplify the process of determining the force required by a gas strut to support or lift a lid, hatch, or any other object that pivots open. Gas struts, often seen on car trunks, office chairs, and various types of machinery, require precise calculations to function correctly. This calculator eliminates guesswork, providing a straightforward method to obtain accurate measurements.

Purpose and Functionality

The primary purpose of the Gas Strut Calculator is to help individuals and professionals accurately calculate the force needed from a gas strut to lift or hold an object in place. This calculation is crucial in ensuring that the selected gas strut will not only fit the application but also perform efficiently and safely over time. The formula used in the calculator is:

F = (W * D) / (2 * L)

  • F represents the force required per gas strut, measured in Newtons (N).
  • W is the weight of the lid or the object, converted to Newtons (N).
  • D is the distance from the pivot point to the object's center of weight, in meters (m).
  • L is the length of the gas strut when fully extended, in meters (m).

This formula assumes the gas strut is mounted at a 90-degree angle to the lid at full open position, which is optimal for efficiency and support.

Step-by-Step Example

Let's go through an example calculation:

Imagine you have a lid that weighs 10 kilograms (kg), with the distance from the pivot to the center of gravity being 0.5 meters (m), and the gas strut, when fully extended, measures 0.7 meters (m).

  1. Convert the weight from kilograms to Newtons: 10 kg * 9.81 m/s² = 98.1 N.
  2. Use the formula: F = (98.1 N * 0.5 m) / (2 * 0.7 m).
  3. Calculate the result: F = 35.0357 N.

Therefore, the force required per gas strut for this lid is approximately 35.04 Newtons.

Information Table

Here's a table with some typical values and their calculated force requirements:

Weight of Lid (kg)Distance from Pivot (m)Length of Gas Strut (m)Required Force (N)


The Gas Strut Calculator is an invaluable tool for anyone needing to select or install gas struts. It not only simplifies the calculation process but also ensures that users can confidently choose the right gas strut for their needs, enhancing both the functionality and safety of their applications. By providing a straightforward formula and a user-friendly platform for calculation, this calculator makes it easier to achieve precise results, eliminating the risk of damage or failure due to incorrect strut sizing. Whether for industrial, automotive, or domestic uses, understanding and applying the correct force requirements with the Gas Strut Calculator can lead to more efficient designs and longer-lasting implementations.

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