Inches to mm Reference Table
Published by ELEXAN Scientific on Mar 3rd 2025
Find yourself using an online calculator to convert the same numbers from inches to mm over and over? Bookmark this handy reference table for common conversions used in microfluidics such as for CNC tools, material thicknesses, and tubing diameters!
And if you're wondering:
One thou = one mil = 0.001" = 0.0254 mm = 25.4 µm
| Reference | Metric (mm) | Reference | Metric (mm) |
| 0.001" | 0.0254 | 0.014" | 0.356 |
| 0.002" | 0.0508 | 1/64" | 0.397 |
| 0.003" | 0.0762 | 0.4 mm | 0.400 |
| 0.004" | 0.1016 | 0.016" | 0.406 |
| 0.1 mm | 0.100 | 0.5 mm | 0.500 |
| 0.005" | 0.127 | 0.6 mm | 0.600 |
| 0.006" | 0.1524 | 0.7 mm | 0.700 |
| 0.007" | 0.1778 | 1/32" | 0.794 |
| 0.2 mm | 0.200 | 0.8 mm | 0.800 |
| 0.008" | 0.2032 | 0.9 mm | 0.900 |
| 0.01" | 0.254 | 1.0 mm | 1.000 |
| 0.3 mm | 0.300 | 1/8" | 3.175 |
| 0.012" | 0.305 | 1/4" | 6.350 |