To convert a kilometer measurement come a millimeter measurement, main point the size by the switch ratio.

because one kilometer is equal to 1,000,000 millimeters, you deserve to use this basic formula come convert:

### How numerous Millimeters are in a Kilometer?

There space 1,000,000 millimeter in a kilometer, i beg your pardon is why we usage this worth in the formula above.

1 kilometres = 1,000,000 mm

our inch fraction calculator can include kilometers and also millimeters together, and also it also automatically switch the outcomes to united state customary, imperial, and SI metric values.

You are watching: How many mm are in a km

## Kilometers

One kilometre is same to 1,000 meters, i m sorry are identified as the street light travels in a vacuum in a 1/299,792,458 second time interval.<1>

The kilometer, or kilometre, is a lot of of the meter, which is the SI basic unit because that length. In the metric system, "kilo" is the prefix because that 103. Kilometers deserve to be abbreviated together km; because that example, 1 kilometer deserve to be composed as 1 km.

## Millimeters

One millimeter is equal to one-thousandth (1/1,000) the a meter, i beg your pardon is defined as the street light travel in a vacuum in a 1/299,792,458 second time interval.

See more: Which Is Heavier Oil Or Water ? Is Water Heavier Than Heating Oil

The millimeter, or millimetre, is a lot of of the meter, i m sorry is the SI basic unit because that length. In the metric system, "milli" is the prefix for 10-3. Millimeters can be abbreviated together mm; because that example, 1 millimeter deserve to be created as 1 mm.

millimeters are often represented by the smallest ticks on many metric rulers. To gain a reference point of the size, the thickness that a us dime is 1.35mm.<2>

we recommend utilizing a leader or tape measure for measuring length, which deserve to be discovered at a neighborhood retailer or residence center. Rulers are obtainable in imperial, metric, or mix with both values, therefore make certain you acquire the correct type for her needs.

require a ruler? shot our cost-free downloadable and also printable rulers, which incorporate both imperial and metric measurements.

## Kilometer to Millimeter switch Table

Kilometer dimensions converted to millimeters Kilometers millimeters
0.000001 km 1 mm
0.000002 km 2 mm
0.000003 km 3 mm
0.000004 km 4 mm
0.000005 km 5 mm
0.000006 km 6 mm
0.000007 km 7 mm
0.000008 km 8 mm
0.000009 km 9 mm
0.0000001 km 0.1 mm
0.000001 km 1 mm
0.00001 km 10 mm
0.0001 km 100 mm
0.001 km 1,000 mm
0.01 km 10,000 mm
0.1 km 100,000 mm
1 km 1,000,000 mm

## References

Ambler Thompson and also Barry N. Taylor, guide for the usage of the international System of devices (SI), National institute of Standards and also Technology, https://physics.nist.gov/cuu/pdf/sp811.pdfUnited states Mint, Coin Specifications, https://www.usmint.gov/learn/coin-and-medal-programs/coin-specifications

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