Roughly turn a US sieve mesh number into an opening in micrometres, or the other way.
| Mesh | – |
| µm | – |
Use this for powders, soils, and filters when a bag says “100 mesh” and a spec wants microns. Type either the mesh number or the opening, then pick From.
This uses the common rule of thumb: opening (µm) ≈ 14900 / mesh. Real ASTM/ISO sieves differ a little by standard. It is opening size, not particle size after milling.
Value: Either the mesh number or the opening in µm, matching From.
From: Mesh if you have a sieve number; µm if you have an opening size.
Mesh: Approximate US sieve number.
µm: Approximate opening in micrometres.
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