# How many mm in 1 km?

There are 1000000 millimeters in a kilometer

Here you can find how many millimeters are there in any quantity of kilometer. You just need to type the kilometers value in the box at left (input) and you will get the answer in millimeters in the box at right (output).

## Kilometers to Millimeters Converter |
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## How to convert 1 kilometer to millimeters

To calculate a value in kilometers to the corresponding value in millimeters, just multiply the quantity in kilometers by 1000000 (the conversion factor).

Here is the**formula**:

Value in millimeters = value in kilometers × 1000000

Supose you want to convert a km into millimeters. In this case you will have:

Value in millimeters = 1 × 1000000 = 1000000

## Definition of Kilometer

A kilometer (km) is a decimal multiple of the meter, the International System of Units (SI) unit of length, approximately equivalent to 39.37 inches. A kilometer is now used officially for expressing distances between geographical places on land in most of the world with notable exceptions being the United States and the United Kingdom.

## Definition of Millimeter

A millimeter (mm) (mispeled millimeter) is a decimal fraction of the meter, the International System of Units (SI) unit of length, approximately equivalent to 39.37 inches.

Using this converter you can get answers to questions like:

- How many millimeters are in a km?
- A km is equal to how many millimeters?
- How much is a km in millimeters?
- How to convert kilometers to millimeters?
- What is the kilometers to millimeters conversion factor?
- How to transform kilometers in millimeters?
- What is the formula to convert from kilometers to millimeters? among others.

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