Convert millimeter to micrometer
1 mm = 1,000 μm
1 mm = 1,000 μm
1 mm in every length unit
| femtometer | 1,000,000,000,000 fm |
| picometer | 1,000,000,000 pm |
| nanometer | 1,000,000 nm |
| micrometer | 1,000 μm |
| millimeter | 1 mm |
| centimeter | 0.1 cm |
| decimeter | 0.01 dm |
| meter | 0.001 m |
| kilometer | 0.000001 km |
| inch | 0.0394 in |
| foot | 0.00328 ft |
| yard | 0.00109 yd |
| mile | 6.21e-07 mi |
| nautical mile | 5.40e-07 nmi |
| astronomical unit | 6.68e-15 AU |
| light-year | 1.06e-19 ly |
| parsec | 3.24e-20 pc |
How the conversion works
Multiply by 1,000 to go from millimeter to micrometer, 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? micrometer to millimeter — 1 μm = 0.001 mm.
millimeter to micrometer — common values
| 1 mm | 1,000 μm |
| 2 mm | 2,000 μm |
| 3 mm | 3,000 μm |
| 5 mm | 5,000 μm |
| 10 mm | 10,000 μm |
| 15 mm | 15,000 μm |
| 20 mm | 20,000 μm |
| 25 mm | 25,000 μm |
| 50 mm | 50,000 μm |
| 75 mm | 75,000 μm |
| 100 mm | 100,000 μm |
| 250 mm | 250,000 μm |
| 500 mm | 500,000 μm |
| 1000 mm | 1,000,000 μm |
Solvers that use length