Micrometers to kilometers
kilometers = micrometers × 1e-9
Reverse: kilometers to micrometers
How to convert micrometers to kilometers
One micrometer is 1e-9 kilometers, so multiply the number of micrometers by 1e-9. For example, 20 micrometers is 20 × 1e-9 = 2e-8 kilometers. To go back, divide by the same number, or multiply by 1,000,000,000.
Quick estimate
Multiplying by about 1e-9 gets within 0.0% of the exact answer, which is enough to check that a result makes sense.
Where it comes up
Length conversions come up in DIY and building plans, running and cycling distances, maps, clothing sizes and travel between countries that use metric and imperial units.
| micrometers | kilometers |
|---|---|
| 1 um | 1e-9 km |
| 2 um | 2e-9 km |
| 3 um | 3e-9 km |
| 4 um | 4e-9 km |
| 5 um | 5e-9 km |
| 6 um | 6e-9 km |
| 7 um | 7e-9 km |
| 8 um | 8e-9 km |
| 9 um | 9e-9 km |
| 10 um | 1e-8 km |
| 11 um | 1.1e-8 km |
| 12 um | 1.2e-8 km |
| 13 um | 1.3e-8 km |
| 14 um | 1.4e-8 km |
| 15 um | 1.5e-8 km |
| 16 um | 1.6e-8 km |
| 17 um | 1.7e-8 km |
| 18 um | 1.8e-8 km |
| 19 um | 1.9e-8 km |
| 20 um | 2e-8 km |
| 25 um | 2.5e-8 km |
| 30 um | 3e-8 km |
| 40 um | 4e-8 km |
| 50 um | 5e-8 km |
| 60 um | 6e-8 km |
| 70 um | 7e-8 km |
| 75 um | 7.5e-8 km |
| 80 um | 8e-8 km |
| 90 um | 9e-8 km |
| 100 um | 1e-7 km |
| 120 um | 1.2e-7 km |
| 150 um | 1.5e-7 km |
| 200 um | 2e-7 km |
| 250 um | 2.5e-7 km |
| 300 um | 3e-7 km |
| 400 um | 4e-7 km |
| 500 um | 5e-7 km |
| 750 um | 7.5e-7 km |
| 1,000 um | 0.000001 km |
| 1,500 um | 0.0000015 km |
| 2,000 um | 0.000002 km |
| 5,000 um | 0.000005 km |
| 10,000 um | 0.00001 km |
Questions
How many kilometers are in a micrometer?
1e-9 kilometers.
How do I convert micrometers to kilometers in a spreadsheet?
Put the value in A1 and type =A1*1e-9, then fill the formula down the column.
Are the values in the table exact?
They are calculated from the exact definitions of the units and rounded only for display. Open any row for the full working.