Convert micrometer to millimeter
1 μm = 0.001 mm
1 μm = 0.001 mm
1 μm in every length unit
| Planck length | 6.1871e+28 lP |
| femtometer | 1,000,000,000 fm |
| picometer | 1,000,000 pm |
| bohr radius | 18,897 a0 |
| angstrom | 10,000 Å |
| nanometer | 1,000 nm |
| micrometer | 1 μm |
| thou | 0.03937 thou |
| point | 0.0028346 pt |
| millimeter | 0.001 mm |
| pica | 0.00023622 pc |
| centimeter | 0.0001 cm |
| inch | 0.00003937 in |
| decimeter | 0.00001 dm |
| hand | 0.0000098425 hh |
| link | 0.000004971 li |
| foot | 0.0000032808 ft |
| US survey foot | 0.0000032808 ftUS |
| yard | 0.0000010936 yd |
| meter | 0.000001 m |
| fathom | 5.4681e-07 ftm |
| rod | 1.9884e-07 rd |
| chain | 4.9710e-08 ch |
| cable length | 5.3996e-09 cb |
| furlong | 4.9710e-09 fur |
| kilometer | 1.0000e-09 km |
| mile | 6.2137e-10 mi |
| nautical mile | 5.3996e-10 nmi |
| league | 2.0712e-10 lea |
| megameter | 1.0000e-12 Mm |
| Earth radius | 1.5696e-13 REarth |
| light-second | 3.3356e-15 ls |
| lunar distance | 2.6015e-15 LD |
| solar radius | 1.4374e-15 Rsun |
| light-minute | 5.5594e-17 lmin |
| astronomical unit | 6.6846e-18 AU |
| light-year | 1.0570e-22 ly |
| parsec | 3.2408e-23 pc |
| kiloparsec | 3.2408e-26 kpc |
| megaparsec | 3.2408e-29 Mpc |
| gigaparsec | 3.2408e-32 Gpc |
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 |