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Mesh to Micron Converter

Use this mesh-to-micron converter for quick filtration, particle-size, and material screening comparisons before checking the exact sieve specification.

Live converter

Mesh to microns

Specification note

Mesh openings are table-based estimates. Verify final lab, filtration, or procurement specs against the exact sieve standard or supplier certificate.

Estimated opening149 microns

Listed table value for 100 mesh.

Millimeters0.149 mm

0.00587 inches.

FinenessFine

Higher mesh numbers generally mean smaller openings.

Nearby sieve openings
MeshOpening
80177 microns
100149 microns
120125 microns

Conversion method

Mesh to micron lookup

Micron opening = standard sieve aperture lookup for the selected mesh number

Mesh number is not a universal formula; wire diameter and sieve standard affect the actual opening.

How to use

Steps

  1. Enter the mesh number or choose one close to your sieve label.
  2. Read the nearest common sieve opening in microns.
  3. Check the millimeter and inch equivalents for supplier or lab notes.
  4. Verify final procurement or lab specifications against the exact sieve standard or certificate.

Example

Sample conversion

Mesh100
OpeningAbout 150 microns
Millimeters0.150 mm

Converter use

Best for

  • Quick everyday math with the result and formula in one place.
  • Shopping, date, time, unit, school, or household comparisons.

Before relying on it

Check first

  • Mesh number is not a universal formula; wire diameter and sieve standard affect the actual opening.
  • Mixing units, dates, or original values across the same calculation.
  • Rounding early and then using the rounded number in another step.

Details

What to know before using the output

Lookup behaviorNearest common sieve

If a mesh number is not in the table, the calculator shows the closest listed sieve opening.

Micron meaning1 micron = 0.001 mm

Microns describe particle or opening size at very small scales.

Specification boundaryTable estimate

Use manufacturer data or ASTM/ISO sieve documentation for final quality or procurement decisions.

Source notes

References used for this converter

ASTM E11Describes woven-wire test sieve requirements and nominal aperture sizes for test sieves.NIST Technical Note 1096Includes mesh-size and particle-diameter relationships for standard sieve series.

Benchmarks

How to read the output

40 mesh: 425 microns.

Common medium sieve reference.

100 mesh: 150 microns.

Fine screening reference.

200 mesh: 75 microns.

Very fine sieve reference.

Method and limitations

Methodology and assumptions

Formula, inputs, limitations and review record
Conversion method

Micron opening = standard sieve aperture lookup for the selected mesh number

Inputs used

Mesh number

Limitations

Everyday results are quick planning checks. Unit choices, rounding, labels, measurements, local prices, and real-world constraints can change the final decision.

Review record

Catalog QA baseline on June 6, 2026. This date marks the catalog-wide automated and editorial QA baseline, not a tool-specific expert review.

Cite this page

Toolkit Shelf. Mesh to Micron Converter. https://toolkitshelf.com/tools/mesh-to-micron-converter

FAQ

Common questions

Is mesh to micron an exact formula?

No. Mesh counts openings per inch, while micron opening depends on the wire and standard. A lookup table is safer than a universal formula.

What does a higher mesh number mean?

A higher mesh number usually means a smaller opening and finer retained or passing particles.

Can I use this for lab certification?

Use it for planning only. For certification, purchasing, or quality control, use the exact sieve standard and supplier certificate.