Convert kilometers to millimeters
Accurate tool to convert between km and mm
Length
Kilometers
The kilometer is a unit of length equal to one thousand meters.
Millimeters
The millimeter is a unit of length in the metric system equal to one thousandth of a meter.
Formula
To convert from kilometers to millimeters, multiply the length by 1,000,000.
kilometers (km)
Description
The kilometer is a unit of length equal to one thousand meters.
History
Part of the original metric system adopted in France in the 1790s.
Symbol Origin
From 'kilo' (thousand) and 'meter'.
Usage Context
The standard unit for road distances and speed limits in most of the world.
Main Usage
Did you know?
A kilometer is about 0.62 miles. It takes about 10-12 minutes to walk a kilometer at a moderate pace.
millimeters (mm)
Description
The millimeter is a unit of length in the metric system equal to one thousandth of a meter.
History
Defined in 1795 as part of the metric system numbering, based on one ten-millionth of the distance from the equator to the North Pole.
Symbol Origin
Derived from 'milli' (thousandth) and 'meter'.
Usage Context
Commonly used in engineering, manufacturing, and for measuring small objects like rain, screws, or paper thickness.
Main Usage
Did you know?
A standard credit card is about 0.76 mm thick.
Quick Conversion Table
| kilometers (km) | millimeters (mm) |
|---|---|
| 1 | 1,000,000 |
| 2 | 2,000,000 |
| 5 | 5,000,000 |
| 10 | 10,000,000 |
| 25 | 25,000,000 |
| 50 | 50,000,000 |
| 100 | 100,000,000 |
| 500 | 500,000,000 |
| 1000 | 1,000,000,000 |
| 2500 | 2,500,000,000 |
| 5000 | 5,000,000,000 |
| 10000 | 10,000,000,000 |
Frequently Asked Questions
How to convert kilometers to millimeters?
To convert from kilometers to millimeters, multiply the length by 1,000,000.
How many millimeters in 1 kilometers?
1 kilometers is equal to 1,000,000 millimeters.
What is a kilometers?
The kilometer is a unit of length equal to one thousand meters.
What is a millimeters?
The millimeter is a unit of length in the metric system equal to one thousandth of a meter.