Particle size conversion table

Standard	SGN	Mesh	inch	mm	micron
25.4 mm	2540	1 in.	1	25.4	25400
22.6 mm	2260	7/8 in.	0.875	22.6	22600
19.0 mm	1900	3/4 in.	0.75	19	19000
16.0 mm	1600	5/8 in.	0.625	16	16000
13.5 mm	1350	0.530 in.	0.53	13.5	13500
12.7 mm	1270	1/2 in.	0.5	12.7	12700
11.2 mm	1120	7/16 in.	0.438	11.2	11200
9.51 mm	951	3/8 in.	0.375	9.51	9510
8.00 mm	800	5/16 in.	0.312	8	8000
6.73 mm	673	0.265 in.	0.265	6.73	6730
6.35 mm	635	1/4 in.	0.25	6.35	6350
5.66 mm	566	No.3 1/2	0.223	5.66	5660
4.76 mm	476	No. 4	0.187	4.76	4760
4.00 mm	400	No. 5	0.157	4	4000
3.36 mm	336	No. 6	0.132	3.36	3360
2.83 mm	283	No. 7	0.111	2.83	2830
2.38 mm	238	No. 8	0.0937	2.38	2380
2.00 mm	200	No. 10	0.0787	2	2000
1.68 mm	168	No. 12	0.0661	1.68	1680
1.41 mm	141	No. 14	0.0555	1.41	1410
1.19 mm	119	No. 16	0.0469	1.19	1190
1.00 mm	100	No. 18	0.0394	1	1000
0.841 mm	84.1	No. 20	0.0331	0.841	841
0.707 mm	70.7	No. 25	0.0278	0.707	707
0.595 mm	59.5	No. 30	0.0234	0.595	595
0.500 mm	50	No. 35	0.0197	0.5	500
0.420 mm	42	No. 40	0.0165	0.42	420
0.354 mm	35.4	No. 45	0.0139	0.354	354
0.297 mm	29.7	No. 50	0.0117	0.297	297
0.250 mm	25	No. 60	0.0098	0.25	250
0.210 mm	21	No. 70	0.0083	0.21	210
0.177 mm	17.7	No. 80	0.007	0.177	177
0.149 mm	14.9	No. 100	0.0059	0.149	149
0.125 mm	12.5	No. 120	0.0049	0.125	125
0.105 mm	10.5	No. 140	0.0041	0.105	105
0.088 mm	8.8	No. 170	0.0035	0.088	88
0.074 mm	7.4	No. 200	0.0029	0.074	74
0.063 mm	6.3	No. 230	0.0025	0.063	63
0.053 mm	5.3	No. 270	0.0021	0.053	53
0.044 mm	4.4	No. 325	0.0017	0.044	44
0.037 mm	3.7	No. 400	0.0015	0.037	37