Injection Pressure Calculator


Calculating injection pressure is crucial in various industries, particularly in plastic molding processes. Having an accurate understanding of injection pressure ensures the quality and consistency of the final product. This article presents a calculator tool along with an explanation of its usage, formula, example solve, and frequently asked questions.

How to Use

To utilize the injection pressure calculator, simply input the required parameters into the designated fields and click the “Calculate” button. The calculator will then process the inputs and provide you with the corresponding injection pressure value.


The formula for calculating injection pressure is as follows:


  • P = Injection Pressure
  • F = Force (in newtons)
  • A = Area of the mold cavity (in square meters)
  • Ac​ = Area of the part being molded (in square meters)

Example Solve

Let’s consider an example where:

  • Force (F) = 5000 N
  • Area of the mold cavity (A) = 0.02 m²
  • Area of the part being molded (A_c) = 0.005 m²

Using the formula mentioned above:


Q: What is injection pressure?
A: Injection pressure is the force applied to the molten material to fill a mold cavity during the injection molding process.

Q: Why is injection pressure important?
A: Injection pressure ensures proper filling of the mold cavity and affects the quality and consistency of the final product.

Q: How accurate is the injection pressure calculated by this tool?
A: The calculator provides precise results based on the input parameters and the formula mentioned.


The injection pressure calculator provided in this article offers a convenient way to determine the injection pressure required for various molding processes. By inputting the relevant parameters, users can quickly obtain accurate results, ensuring the efficiency and quality of their manufacturing operations.

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