Particle size comparison Chart

 
 
Measurements
 
Sieve (Screen)
 
Millimeters
 
Microns ()
 
Inches
 
Mils
 
U.S. Std. Sieve Designation*
 
Tyler Std. Sieve
 
0.0254
 
25.4
0.00100
 
1.00
 
-
 
-
 
0.0318
 
31.8
0.00125
 
1.25
 
-
 
-
 
0.0381
 
38.1
0.00150
 
1.50
 
38 m (No. 400)
 
400 mesh
 
0.0445
 
44.5
0.00175
 
1.75
 
45 m (No. 325)
 
325 mesh
 
0.0508
 
50.8
0.00200
 
2.00
 
-
 
-
 
0.0533
 
53.3
0.00210
 
2.10
 
53 m (No. 270)
 
270 mesh
 
0.0635
 
63.5
0.00250
 
2.50
 
63 m (No. 230)
 
250 mesh
 
0.0737
 
73.7
0.00290
 
2.90
 
75 m (No. 200)
 
200 mesh
 
0.0762
 
76.2
0.00300
 
3.00
 
-
 
-
 
0.0889
 
88.9
0.00350
 
3.50
 
90 m (No. 170)
 
170 mesh
 
0.1016
 
101.6
0.00400
 
4.00
 
-
 
-
 
0.1050
 
105.0
0.00413
 
4.13
 
106 m (No. 140)
 
150 mesh
 
0.1250
 
125.0
0.00492
 
4.92
 
125 m (No. 120)
 
115 mesh
 
0.1490
 
149.0
0.00587
 
5.87
 
150 m (No. 100)
 
100 mesh
 
0.1770
 
177.0
0.00697
 
6.97
 
180 m (No. 80)
 
80 mesh
 
0.2500
 
250.0
0.00984
 
9.84
 
250 m (No. 60)
 
60 mesh
 
0.4200
 
420.0
0.01654
 
16.54
 
425 m (No. 40)
 
35 mesh
 
0.8410
 
841.0
0.03311
 
33.11
 
850 m (No. 20)
 
20 mesh
 
1.0000
 
1000.0
0.03937
 
39.37
 
1 mm (No. 18)
 
16 mesh

 

SOURCE

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