Brinell Hardness Number Calculator W Formula



Calculating the Brinell Hardness Number (BHN) is crucial in material science and engineering to determine the hardness of metallic materials. This article presents a user-friendly calculator to accurately compute the BHN based on the Brinell hardness formula.

How to Use

To use the calculator, simply input the values of the applied force (F), the diameter of the indenter (D), and the diameter of the indentation (d) into the respective fields. Then, click the “Calculate” button to obtain the Brinell Hardness Number (BHN) result.


The Brinell Hardness Number (BHN) is calculated using the formula:


  • F = Applied Force
  • D = Diameter of the Indenter
  • d = Diameter of the Indentation

Example Solve

Let’s say we have an applied force of 3000 kgf, an indenter diameter of 10 mm, and an indentation diameter of 2 mm. Plugging these values into the formula, we get:

After computation, the Brinell Hardness Number (BHN) is approximately 374.5.


Q: What is the significance of the Brinell Hardness Number?
A: The Brinell Hardness Number provides a measure of the hardness of a material, which is crucial for assessing its suitability for various industrial applications.

Q: Can the Brinell hardness test be performed on all materials?
A: While the Brinell hardness test is widely used, it may not be suitable for extremely hard or thin materials.

Q: How accurate is the Brinell hardness calculation?
A: The Brinell hardness calculation provides a reliable measure of hardness, but it’s essential to ensure proper testing conditions for accurate results.


The Brinell Hardness Number (BHN) calculator simplifies the computation process, enabling quick and accurate determination of material hardness. By understanding the formula and utilizing this tool, engineers and material scientists can make informed decisions in material selection and quality control processes.

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