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Mesh To Micron Calculator

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In various industries, such as pharmaceuticals, food processing, and materials science, there’s a common need to understand particle sizes. This is where a handy tool like the “Mesh to Micron Calculator” comes into play. It’s a simple yet effective way to convert mesh sizes, which describe the number of openings per inch in a screen, to microns, the unit used to measure particle sizes. This conversion is crucial for quality control, ensuring materials meet specific standards and are suitable for their intended use.

Purpose and Functionality

The Mesh to Micron Calculator serves a fundamental purpose: to provide a quick and approximate conversion between the mesh size of a material and the particle size in microns. Mesh size gives us an idea of how fine or coarse a material is, while microns give a direct measurement of particle size, allowing for more precise control in various applications.

The basic formula used for the conversion is:

Microns (μm)=14900Mesh numberMicrons (μm)=Mesh number14900​

Here’s what goes into this formula:

  • Mesh number: This indicates how many openings are present in one inch of a screen. A higher mesh number means more openings and, thus, a finer sieve or screen.
  • 14900: This constant is derived from the relationship between mesh numbers and particle size in microns, taking into account the standard inch-to-micron conversion and an adjustment factor for the non-linear increase in openings with mesh numbers.


A Mesh to Micron Calculator converts the number of holes in a mesh screen (mesh size) to the size of the particles that can pass through (micron size). This is useful in filtering applications where you need to know the size of the particles that a filter can capture. The formula to convert mesh to microns can be simplified as follows:

Micron Size = 15000 / Mesh Size

Here’s a breakdown of each component:

  1. Micron Size: This is the size of the particles in micrometers (one millionth of a meter). It indicates the diameter of the particles that can pass through the mesh.
  2. Mesh Size: This is the number of holes in a linear inch of the mesh screen. A higher mesh number means smaller holes and finer filtration.
  3. 15000: This is a constant used in the conversion formula. It’s derived from the number of microns in an inch (approximately 25,400) and the standard mesh size calculation which involves counting the number of openings in one linear inch of screen.

Using this formula, you can convert the mesh size of a screen to the approximate size of particles it can filter in microns. For example, a 100 mesh screen has 100 holes per linear inch, and using the formula, the micron size would be 150 microns (15000 / 100 = 150).

Step-by-Step Examples

Let’s break down the conversion process with an example. Suppose you want to convert a 100 mesh screen to microns:

  1. Identify the mesh number: In this case, it’s 100.
  2. Apply the formula: Microns = 14900 / 100.
  3. Calculate: This gives us 149 microns.

This means that the openings in a 100 mesh screen allow particles of up to 149 microns to pass through.

Relevant Information Table

Here’s a simple table that provides a quick reference for some common mesh sizes and their approximate micron equivalents:

Mesh NumberMicron Size (μm)


The Mesh to Micron Calculator is an invaluable tool for professionals across various industries. It offers a straightforward method to convert mesh sizes to microns, facilitating better material selection, quality control, and process optimization. While the calculator provides an approximation, it’s generally sufficient for most practical purposes. For highly precise applications, consulting detailed conversion tables or manufacturer specifications is recommended. This simple calculator thus bridges the gap between practical usability and technical precision, making it an essential tool in many fields.

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