Mesh to Micron Conversion Chart conforms to ISO 565 / ASTM E11. As engineering reference, it is specified by the values in the table below; this page also covers materials, surface treatments and typical filtration uses.
About This Reference
This is an engineering reference table for mesh to micron conversion chart based on ISO 565 / ASTM E11. Use it alongside our filter mesh catalog when selecting and specifying media.
Reference Data (ISO 565 / ASTM E11)
| US mesh count | Aperture (µm) | Aperture (mm) | Typical wire diameter (mm) | Reference standard |
|---|---|---|---|---|
| 2-Mesh | 11100 | 11.100 | 1.600 | ISO 565 / ASTM E11 series |
| 4-Mesh | 5350 | 5.350 | 1.000 | ISO 565 / ASTM E11 series |
| 8-Mesh | 2375 | 2.375 | 0.800 | ISO 565 / ASTM E11 series |
| 10-Mesh | 1990 | 1.990 | 0.550 | ISO 565 / ASTM E11 series |
| 20-Mesh | 870 | 0.870 | 0.400 | ISO 565 / ASTM E11 series |
| 30-Mesh | 547 | 0.547 | 0.300 | ISO 565 / ASTM E11 series |
| 40-Mesh | 385 | 0.385 | 0.250 | ISO 565 / ASTM E11 series |
| 50-Mesh | 288 | 0.288 | 0.220 | ISO 565 / ASTM E11 series |
| 60-Mesh | 233 | 0.233 | 0.190 | ISO 565 / ASTM E11 series |
| 80-Mesh | 178 | 0.177 | 0.140 | ISO 565 / ASTM E11 series |
| 100-Mesh | 154 | 0.154 | 0.100 | ISO 565 / ASTM E11 series |
| 120-Mesh | 122 | 0.122 | 0.090 | ISO 565 / ASTM E11 series |
| 150-Mesh | 103 | 0.103 | 0.066 | ISO 565 / ASTM E11 series |
| 200-Mesh | 74 | 0.074 | 0.053 | ISO 565 / ASTM E11 series |
| 250-Mesh | 62 | 0.062 | 0.040 | ISO 565 / ASTM E11 series |
| 325-Mesh | 42 | 0.042 | 0.036 | ISO 565 / ASTM E11 series |
| 400-Mesh | 34 | 0.034 | 0.030 | ISO 565 / ASTM E11 series |
| 500-Mesh | 26 | 0.026 | 0.025 | ISO 565 / ASTM E11 series |
| 635-Mesh | 20 | 0.020 | 0.020 | ISO 565 / ASTM E11 series |