How many kilometers are in a micrometer?

There are 1.000000e-9 kilometers in 1 micrometer. The formula is km = µm ÷ 1,000,000,000.

How do you convert micrometers to kilometers?

Use the formula km = µm ÷ 1,000,000,000. For example, 10 micrometers equals 0.00000001 kilometers.

Is the micrometers to kilometers conversion exact?

Yes. Micrometers and kilometers are both units of length, related by an exact defined factor. Displayed results are rounded for readability.

What is µm short for?

µm is the standard symbol for micrometer (also written as microns). km is the symbol for kilometer.

Convert Micrometers to kilometers

1 micrometer = 1.000000e-9 kilometers · km = µm ÷ 1,000,000,000

Micrometers

µm

Kilometers

1.000000e-9km

1 micrometer = 1.000000e-9 kilometers

When you need this conversion

This conversion goes from micrometers, used for manufacturing tolerances and filtration ratings, to kilometers, the metric unit for road distances and travel. Both measure the same physical quantity, so the conversion is exact — the difference is which unit your source, tool, or region happens to use.

Micrometers to kilometers conversion table

Conversion table from micrometers to kilometers
Micrometers (µm)	Kilometers (km)
1 µm	1.000000e-9 km
2 µm	0.000000002 km
3 µm	0.000000003 km
5 µm	0.000000005 km
10 µm	0.00000001 km
15 µm	0.000000015 km
20 µm	0.00000002 km
25 µm	0.000000025 km
50 µm	0.00000005 km
75 µm	0.000000075 km
100 µm	0.0000001 km
250 µm	0.00000025 km
500 µm	0.0000005 km
1,000 µm	0.000001 km

The formula

km = µm ÷ 1,000,000,000

Because both units measure length, the conversion is a single multiplication by a fixed factor. That factor never changes, so the result is exact.

Convert the other way

Kilometers to micrometers →

Related length conversions

All length conversions →

Frequently asked questions

How many kilometers are in a micrometer?: There are 1.000000e-9 kilometers in 1 micrometer. The formula is km = µm ÷ 1,000,000,000.
How do you convert micrometers to kilometers?: Use the formula km = µm ÷ 1,000,000,000. For example, 10 micrometers equals 0.00000001 kilometers.
Is the micrometers to kilometers conversion exact?: Yes. Micrometers and kilometers are both units of length, related by an exact defined factor. Displayed results are rounded for readability.
What is µm short for?: µm is the standard symbol for micrometer (also written as microns). km is the symbol for kilometer.