# Convert Kilometer to Millimeter (km to mm)

## How to use the converter

To convert kilometer to millimeter enter the value in the field below and select the target unit, the value will be displayed below:

Value:
From:
To:
Decimal places:

=

## Conversion Tables

Metric
Kilometer (km)
Meter (m)
Decimeter (dm)
Centimeter (cm)
Millimeter (mm)
Micrometer (µm)
Nanometer (nm)
Angstrom (Å)
Astronomical
Parsec (pc)
Light-year
Astronomical unit (AU)
Light-minute
Light-second
British/American
League
Mile (mi)
Furlong
Chain
Rod (rd)
Yard (yd)
Foot (ft)
Hand
Inch (in)
Line
Thousandth (mil)
Thou (thou)
Nautical
Nautical mile
Fathom

## How to perform key conversions involving length measurements

The formulas for conversion are represented below:

### Kilometers to Millimeters Formula

m = km x 1000000

Example: 30 kilometers in meters:

mm = km x 1000000

mm = 30 x 1000000

mm = 30000000

### Millimeters to Kilometers Formula

km = mm / 1000000

Example: 1500 meters in kilometers:

km = mm / 1000000

km = 1500 / 1000000

km = 0.0015

## Frequently asked questions involving length and distance

### 3 km in millimeters

Considering that 1 kilometer equals 1000000 millimeters, you can use a rule of three to get that 3 km equals 3000000 millimeters.

1 km - 1000000 mm

3 km - x

Apply the rule of three and get:

x km = 3000000 mkm2

x = 3000000 mm

### 10000 millimeters is equal to how many kilometers?

If every 1000000 millimeters we have 1 kilometer, just divide the number of millimeters (10000) by 1000000, so you will get that 10000 mm equals 0.01 km. Observe the calculation below:

km = mm / 1000000

Km = 10000 / 1000000

km = 0,01