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Home > Resources > Technical Information > Particle Size Conversion Table

Particle Size Conversion Table

“+” before the mesh size indicates the particles are retained on and are larger than the sieve.

“-” before the mesh size indicates the particles pass through and are smaller than the sieve.

For example, if the particle size of a material is described as -10 +400 mesh, then 90% or more of the material will pass through a 10-mesh sieve and be retained by a 400-mesh sieve.

If a material is described as -10 mesh, then 90% or more of the material will pass through a 10-mesh sieve.

Mesh SizeInchesMillimeters(mm)Microns(μm)
40.1874.764760
50.15744000
60.1323.363360
70.1112.832830
80.09372.382380
100.078722000
120.06611.681680
140.05551.411410
160.04691.191190
180.039411000
200.03310.841841
250.02780.707707
300.02340.595595
350.01970.5500
400.01650.42420
450.01390.354354
500.01170.297297
600.00980.25250
700.00830.21210
800.0070.177177
1000.00590.149149
1200.00490.125125
1400.00410.105105
1700.00350.08888
2000.00290.07474
2300.00250.06363
2700.00210.05353
3250.00170.04444
4000.00150.03737
6250.00080.0220
12500.00040.0110
25000.00020.0055

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Email:
Tel:1-201-478-8534
1-516-662-5404
Fax: 1-516-927-0118
Address: 2200 Smithtown Avenue, Room 1 Ronkonkoma, NY 11779-7329 USA