4 Mesh to Micron – Opening Size in µm & mm
4 mesh ≈ 4,760 µm
A US standard 4 mesh sieve has openings of about 4,760 µm (4.76 mm, 0.1874 in).
Step by step
- Mesh 4 means about 4 openings per linear inch.
- Opening size depends on wire thickness, so it is read from the standard sieve series (ASTM E11).
- 4 mesh ≈ 4,760 µm.
A 4 mesh screen separates gravel and coarse aggregate.
Details
- Opening
- 4,760 µm
- Millimeters
- 4.76 mm
- Inches
- 0.1874 in
- Compared with a human hair (~70 µm)
- 68×
How it works
Mesh number counts the openings per linear inch of a woven screen. Because the wire takes up space, the opening is smaller than 25.4 mm divided by the mesh count, and different wire gauges give different openings — so standard sieve series fix the exact opening for each number. Values here follow the US standard series; Tyler mesh numbers are close but not identical.
Nearby values
Related conversions
Frequently asked questions
What is 4 mesh in microns?
About 4,760 µm.
What is 4 mesh in mm?
4.76 mm.
Is higher mesh finer?
Yes — more openings per inch means smaller openings.
What is the difference between US and Tyler mesh?
They are two standard series with nearly the same openings; the numbers differ slightly for some sizes.