Convert micrometer to millimeter
1 μm = 0.001 mm
1 μm = 0.001 mm
1 μm in every length unit
| femtometer | 1,000,000,000 fm |
| picometer | 1,000,000 pm |
| nanometer | 1,000 nm |
| micrometer | 1 μm |
| millimeter | 0.001 mm |
| centimeter | 0.0001 cm |
| decimeter | 0.00001 dm |
| meter | 0.000001 m |
| kilometer | 1.00e-09 km |
| inch | 0.0000394 in |
| foot | 0.00000328 ft |
| yard | 0.00000109 yd |
| mile | 6.21e-10 mi |
| nautical mile | 5.40e-10 nmi |
| astronomical unit | 6.68e-18 AU |
| light-year | 1.06e-22 ly |
| parsec | 3.24e-23 pc |
How the conversion works
Multiply by 0.001 to go from micrometer to millimeter, or divide by it to go back. Every conversion on this site routes through the SI value (m) rather than a table of pairwise factors, so a round-trip returns exactly what you started with.
Going the other way? millimeter to micrometer — 1 mm = 1,000 μm.
micrometer to millimeter — common values
| 1 μm | 0.001 mm |
| 2 μm | 0.002 mm |
| 3 μm | 0.003 mm |
| 5 μm | 0.005 mm |
| 10 μm | 0.01 mm |
| 15 μm | 0.015 mm |
| 20 μm | 0.02 mm |
| 25 μm | 0.025 mm |
| 50 μm | 0.05 mm |
| 75 μm | 0.075 mm |
| 100 μm | 0.1 mm |
| 250 μm | 0.25 mm |
| 500 μm | 0.5 mm |
| 1000 μm | 1 mm |
Solvers that use length