Millimetres to Micrometres Converter
Convert millimetres (mm) to micrometres (µm) instantly. Length conversions come up when reading overseas furniture specs, cycling the Round Island Route in kilometres while a foreign app shows miles, or checking marine distances in the Singapore Strait in nautical miles.
Result
- Micrometres
- 1,000 µm
How to use the millimetres to micrometres converter
- Enter the millimetres (mm).
- The results update as you type, or press Calculate.
- Read the micrometres first, then the supporting figures below it.
Formula
Micrometres = millimetres × 1,000
Worked example
For example, with these inputs:
- Millimetres (mm): 1
the calculator returns:
- Micrometres: 1,000 µm
Millimetres to Micrometres table
| Millimetres | Micrometres |
|---|---|
| 1 mm | 1,000 µm |
| 2 mm | 2,000 µm |
| 5 mm | 5,000 µm |
| 10 mm | 10,000 µm |
| 20 mm | 20,000 µm |
| 25 mm | 25,000 µm |
| 50 mm | 50,000 µm |
| 100 mm | 100,000 µm |
| 250 mm | 250,000 µm |
| 500 mm | 500,000 µm |
| 1,000 mm | 1,000,000 µm |
About this conversion
Length conversions come up when reading overseas furniture specs, cycling the Round Island Route in kilometres while a foreign app shows miles, or checking marine distances in the Singapore Strait in nautical miles.
Singapore adopted the metric system in the 1970s, replacing imperial units and traditional Chinese measures in most official uses. Metric units are now standard in schools, trade and government, but older units survive in property, markets and imported goods.
Writing the units next to every number while you work is the simplest way to avoid mistakes. If the units do not cancel to leave the one you want, the calculation is set up wrongly.
Frequently asked questions
How many micrometres are in one millimetre?
1 mm = 1,000 µm.
How do I convert mm to µm?
Micrometres = millimetres × 1,000.