How many millimeters are in Kilometers? Use this easy and mobile-friendly calculator to convert between kilometers and millimeters.
Read: Meters to Inches – Convert m to in Online
How Many Millimeters in a Kilometer?
There are 1,000,000 millimeters in a kilometer.
The detailed explanation is:
1 kilometer = 1000 meters (Relationship between kilometers and meters)
1 meter = 1000 millimeters (Relationship between meters and millimeters)
Plugging the two relationships together:
1 kilometer = 1000 meters = 1000 * 1000 millimeters = 1,000,000 millimeters
So there are 1,000,000 millimeters in 1 kilometer.
Difference Between Kilometers and Millimeters
The main differences between kilometers and millimeters are:
- Units of measurement: Kilometers (km) and millimeters (mm) are length units in the metric system. However, a kilometer is a much larger unit than a millimeter.
- Scale: 1 km = 1,000 meters 1 mm = 0.001 meters So a kilometer is 1,000,000 mm. Kilometers measure long distances, millimeters measure very small distances.
- Usage: Kilometers are used to measure the distance between cities, the length of a road trip, etc. Millimeters are used to measure very small lengths like the thickness of a coin or the diameter of a pencil.
- Conversions: To convert between them, you multiply or divide by 1,000,000. For example: 5 km = 5,000,000 mm
- Metric system: Kilometers and millimeters are both part of the metric system. Kilometers are used for large-scale measurement, while millimeters are used for small-scale measurement.
- Examples: The width of a fingernail is about 10 mm. The distance between major cities is hundreds of kilometers.
How to Convert Kilometers to Millimeters?
To convert kilometers to millimeters, you can use the conversion factor that defines the relationship between these two length units. The conversion factor is based on the fact that 1 kilometer is approximately equal to 1,000,000 millimeters. Here’s the step-by-step process:
Conversion Formula:
Millimeters = Kilometers × 1,000,000
Task:
Convert 10 kilometers to millimeters.
Calculation:
Number of Millimeters= 10 × 1,000,000 = 10,000,000 mm
Therefore, 10 kilometers is equal to 10,000,000 millimeters.
Kilometers to Millimeters (km to mm) Conversion Table
Here is a table converting kilometers to millimeters for the given ranges:
| Kilometers (km) | Millimeters (mm) |
|---|---|
| 1 | 1,000,000 |
| 2 | 2,000,000 |
| 3 | 3,000,000 |
| 4 | 4,000,000 |
| 5 | 5,000,000 |
| 6 | 6,000,000 |
| 7 | 7,000,000 |
| 8 | 8,000,000 |
| 9 | 9,000,000 |
| 10 | 10,000,000 |
| 20 | 20,000,000 |
| 30 | 30,000,000 |
| 40 | 40,000,000 |
| 50 | 50,000,000 |
| 60 | 60,000,000 |
| 70 | 70,000,000 |
| 80 | 80,000,000 |
| 90 | 90,000,000 |
| 100 | 100,000,000 |
| 200 | 200,000,000 |
| 300 | 300,000,000 |
| 400 | 400,000,000 |
| 500 | 500,000,000 |
| 600 | 600,000,000 |
| 700 | 700,000,000 |
| 800 | 800,000,000 |
| 900 | 900,000,000 |
| 1000 | 1,000,000,000 |
To convert km to mm, multiply the km value by 1,000,000. This table shows the conversions for the given km ranges.
References:
https://en.wikipedia.org/wiki/International_System_of_Units
https://nvlpubs.nist.gov/nistpubs/hb/2019/NIST.HB.133-2019.pdf