Kilometers to Nanometers Converter

1 kilometer (km) equals 1,000,000,000,000 nanometers (nm).

Quick answer

  • 1 kilometer = 1,000,000,000,000 nanometers
  • 1 nanometer = 1 × 10-12 kilometers
  • Formula: nm = km × 1,000,000,000,000

1 kilometer = 1,000,000,000,000 nanometers

How to convert kilometers to nanometers

nm = km × 1,000,000,000,000

To convert kilometers to nanometers, multiply the number of kilometers by 1,000,000,000,000.

Example: 18 km to nm

  1. Start with the value in kilometers: 18 km.
  2. Multiply by 1,000,000,000,000: 18 × 1,000,000,000,000 = 18,000,000,000,000.
  3. Result: 18 kilometers = 18,000,000,000,000 nanometers.

Going the other way, 1 nanometer = 1 × 10-12 kilometers, so to convert nanometers back to kilometers you divide by the same number. See nanometers to kilometers.

Kilometers to nanometers conversion table

Kilometers (km)Nanometers (nm)
0.25 km 250,000,000,000 nm
0.5 km 500,000,000,000 nm
0.75 km 750,000,000,000 nm
1 km 1,000,000,000,000 nm
1.5 km 1,500,000,000,000 nm
2 km 2,000,000,000,000 nm
2.5 km 2,500,000,000,000 nm
3 km 3,000,000,000,000 nm
4 km 4,000,000,000,000 nm
5 km 5,000,000,000,000 nm
6 km 6,000,000,000,000 nm
7 km 7,000,000,000,000 nm
8 km 8,000,000,000,000 nm
9 km 9,000,000,000,000 nm
10 km 10,000,000,000,000 nm
11 km 11,000,000,000,000 nm
12 km 12,000,000,000,000 nm
13 km 13,000,000,000,000 nm
14 km 14,000,000,000,000 nm
15 km 15,000,000,000,000 nm
16 km 16,000,000,000,000 nm
17 km 17,000,000,000,000 nm
18 km 18,000,000,000,000 nm
19 km 19,000,000,000,000 nm
20 km 20,000,000,000,000 nm
21 km 21,000,000,000,000 nm
22 km 22,000,000,000,000 nm
23 km 23,000,000,000,000 nm
24 km 24,000,000,000,000 nm
25 km 25,000,000,000,000 nm
26 km 26,000,000,000,000 nm
27 km 27,000,000,000,000 nm
28 km 28,000,000,000,000 nm
29 km 29,000,000,000,000 nm
30 km 30,000,000,000,000 nm
31 km 31,000,000,000,000 nm
32 km 32,000,000,000,000 nm
33 km 33,000,000,000,000 nm
34 km 34,000,000,000,000 nm
35 km 35,000,000,000,000 nm

More km to nm values

What is a kilometer?

The kilometer (also spelled kilometre) is a metric unit of length equal to 1,000 meters.

More about kilometers →

What is a nanometer?

The nanometer (also nanometre) is a metric unit of length equal to one billionth of a meter.

More about nanometers →

Convert kilometers to other units

Convert other units to nanometers

Frequently asked questions

How many nanometers are in a kilometer?

One kilometer is 1,000,000,000,000 nanometers.

How many kilometers are in a nanometer?

One nanometer is 1e-12 kilometers.

What is the formula to convert kilometers to nanometers?

nm = km × 1,000,000,000,000.