Convert millimeter to micrometer
1 mm = 1,000 μm
sig figs
1 mm = 1,000 μm
1 mm in every length unit
| Planck length | 6.19e+31 lP |
| femtometer | 1,000,000,000,000 fm |
| picometer | 1,000,000,000 pm |
| bohr radius | 18,900,000 a0 |
| angstrom | 10,000,000 Å |
| nanometer | 1,000,000 nm |
| micrometer | 1,000 μm |
| thou | 39.4 thou |
| point | 2.83 pt |
| millimeter | 1 mm |
| pica | 0.236 pc |
| centimeter | 0.1 cm |
| inch | 0.0394 in |
| decimeter | 0.01 dm |
| hand | 0.00984 hh |
| link | 0.00497 li |
| foot | 0.00328 ft |
| US survey foot | 0.00328 ftUS |
| yard | 0.00109 yd |
| meter | 0.001 m |
| fathom | 0.000547 ftm |
| rod | 0.000199 rd |
| chain | 0.0000497 ch |
| cable length | 0.0000054 cb |
| furlong | 0.00000497 fur |
| kilometer | 0.000001 km |
| mile | 6.21e-07 mi |
| nautical mile | 5.40e-07 nmi |
| league | 2.07e-07 lea |
| megameter | 1.00e-09 Mm |
| Earth radius | 1.57e-10 REarth |
| light-second | 3.34e-12 ls |
| lunar distance | 2.60e-12 LD |
| solar radius | 1.44e-12 Rsun |
| light-minute | 5.56e-14 lmin |
| astronomical unit | 6.68e-15 AU |
| light-year | 1.06e-19 ly |
| parsec | 3.24e-20 pc |
| kiloparsec | 3.24e-23 kpc |
| megaparsec | 3.24e-26 Mpc |
| gigaparsec | 3.24e-29 Gpc |
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 |