µm to millimeters
1 µm (µm) equals 0.001 millimeters (mm). Type a value into either box below for an instant two-way conversion. For other units, use the full unit converter.
Chinese version: 微米转毫米
Conversion factor
1 µm = 0.001 mm
Reverse: 1 mm = 1,000 µm
µm to millimeters converter
µm（µm）
millimeters（mm）
µm to mm conversion table
| µm | mm | Detail |
|---|---|---|
| 1 | 0.001 | 1 µm to mm |
| 2 | 0.002 | 2 µm to mm |
| 5 | 0.005 | 5 µm to mm |
| 10 | 0.01 | 10 µm to mm |
| 20 | 0.02 | 20 µm to mm |
| 50 | 0.05 | 50 µm to mm |
| 100 | 0.1 | 100 µm to mm |
| 200 | 0.2 | 200 µm to mm |
| 500 | 0.5 | 500 µm to mm |
| 1,000 | 1 | 1,000 µm to mm |
| 2,000 | 2 | 2,000 µm to mm |
| 5,000 | 5 | 5,000 µm to mm |
| 10,000 | 10 | 10,000 µm to mm |
How to convert
To convert µm to millimeters, multiply: mm = µm × 0.001
To convert millimeters to µm, divide: µm = mm ÷ 0.001 (equivalently × 1,000).
Example: 1,000 µm × 0.001 = 1 millimeters. The factor is derived from the international definition of each unit; results are shown to 4 significant figures.
Frequently asked questions
1,000 µm = 1 millimeters. The formula is: value in µm × 0.001 = value in millimeters. Use the converter above to convert any value instantly.
1 millimeter = 1,000 µm. To convert back, divide the millimeters value by 0.001 (or multiply by 1,000).
millimeters = µm × 0.001; conversely µm = millimeters ÷ 0.001. For example, 1,000 µm × 0.001 = 1 millimeters. The factor comes from the international definition of the units.
More conversions
cm to inin to cmm to ftft to mkm to milemile to kmli to kmkm to limm to cmcm to mmcm to mm to cmm to kmkm to mmm to inin to mmft to cmcm to ftyd to mm to ydchi to cmcun to cmzhang to mnmi to kmkm to nmimile to min to ftft to inft to ydyd to ftin to ydyd to inmile to ftft to milenmi to milemile to nmiµm to nmnm to µmchi to mm to chili to mm to li
Disclaimer: conversion factors are derived from international unit definitions and results are for reference only. For trade settlement, engineering or legal documents, follow the contract or official metrology standards.