Kilometers to Micrometers Conversion
Enter the length in kilometers below to get the value converted to micrometers.
How to Convert Kilometers to Micrometers
To convert a kilometer measurement to a micrometer measurement, multiply the length by the conversion ratio.
Since one kilometer is equal to 1,000,000,000 micrometers, you can use this simple formula to convert:
The length in micrometers is equal to the kilometers multiplied by 1,000,000,000.
How Many Micrometers Are in a Kilometer?
There are 1,000,000,000 micrometers in a kilometer, which is why we use this value in the formula above.
1 km = 1,000,000,000 µm
Kilometers and micrometers are both units used to measure length. Keep reading to learn more about each unit of measure.
The kilometer, or kilometre, is a multiple of the meter, which is the SI base unit for length. In the metric system, "kilo" is the prefix for 103. Kilometers can be abbreviated as km; for example, 1 kilometer can be written as 1 km.
The micrometer, or micrometre, is a multiple of the meter, which is the SI base unit for length. In the metric system, "micro" is the prefix for 10-6. A micrometer is sometimes also referred to as a micron. Micrometers can be abbreviated as µm; for example, 1 micrometer can be written as 1 µm.
To get an idea of the actual physical length of a micrometer, one human hair is 40-50 µm thick, demonstrating how small this unit of measure is.
We recommend using a ruler or tape measure for measuring length, which can be found at a local retailer or home center. Rulers are available in imperial, metric, or combination with both values, so make sure you get the correct type for your needs.
Need a ruler? Try our free downloadable and printable rulers, which include both imperial and metric measurements.
Kilometer to Micrometer Conversion Table
|0.000000001 km||1 µm|
|0.000000002 km||2 µm|
|0.000000003 km||3 µm|
|0.000000004 km||4 µm|
|0.000000005 km||5 µm|
|0.000000006 km||6 µm|
|0.000000007 km||7 µm|
|0.000000008 km||8 µm|
|0.000000009 km||9 µm|
|0.0000000001 km||0.1 µm|
|0.000000001 km||1 µm|
|0.00000001 km||10 µm|
|0.0000001 km||100 µm|
|0.000001 km||1,000 µm|
|0.00001 km||10,000 µm|
|0.0001 km||100,000 µm|
|0.001 km||1,000,000 µm|
|0.01 km||10,000,000 µm|
|0.1 km||100,000,000 µm|
|1 km||1,000,000,000 µm|
- Ambler Thompson and Barry N. Taylor, Guide for the Use of the International System of Units (SI), National Institute of Standards and Technology, https://physics.nist.gov/cuu/pdf/sp811.pdf