Sumwise

Kilometers to micrometers

micrometers = kilometers × 1,000,000,000

Reverse: micrometers to kilometers

How to convert kilometers to micrometers

One kilometer is 1,000,000,000 micrometers, so multiply the number of kilometers by 1,000,000,000. For example, 20 kilometers is 20 × 1,000,000,000 = 20,000,000,000 micrometers. To go back, divide by the same number, or multiply by 1e-9.

Quick estimate

Multiplying by about 1000000000 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.

kilometersmicrometers
1 km1,000,000,000 um
2 km2,000,000,000 um
3 km3,000,000,000 um
4 km4,000,000,000 um
5 km5,000,000,000 um
6 km6,000,000,000 um
7 km7,000,000,000 um
8 km8,000,000,000 um
9 km9,000,000,000 um
10 km10,000,000,000 um
11 km11,000,000,000 um
12 km12,000,000,000 um
13 km13,000,000,000 um
14 km14,000,000,000 um
15 km15,000,000,000 um
16 km16,000,000,000 um
17 km17,000,000,000 um
18 km18,000,000,000 um
19 km19,000,000,000 um
20 km20,000,000,000 um
25 km25,000,000,000 um
30 km30,000,000,000 um
40 km40,000,000,000 um
50 km50,000,000,000 um
60 km60,000,000,000 um
70 km70,000,000,000 um
75 km75,000,000,000 um
80 km80,000,000,000 um
90 km90,000,000,000 um
100 km100,000,000,000 um
120 km120,000,000,000 um
150 km150,000,000,000 um
200 km200,000,000,000 um
250 km250,000,000,000 um
300 km300,000,000,000 um
400 km400,000,000,000 um
500 km500,000,000,000 um
750 km750,000,000,000 um
1,000 km1,000,000,000,000 um
1,500 km1,500,000,000,000 um
2,000 km2,000,000,000,000 um
5,000 km5,000,000,000,000 um
10,000 km10,000,000,000,000 um

Questions

How many micrometers are in a kilometer?

1,000,000,000 micrometers.

How do I convert kilometers to micrometers in a spreadsheet?

Put the value in A1 and type =A1*1000000000, 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.