# 216 millimeters in kilometers

## Conversion

216 millimeters is equivalent to 0.000216 kilometers.[1]

## Conversion formula How to convert 216 millimeters to kilometers?

We know (by definition) that: $1\mathrm{mm}=1e-06\mathrm{km}$

We can set up a proportion to solve for the number of kilometers.

$1 ⁢ mm 216 ⁢ mm = 1e-06 ⁢ km x ⁢ km$

Now, we cross multiply to solve for our unknown $x$:

$x\mathrm{km}=\frac{216\mathrm{mm}}{1\mathrm{mm}}*1e-06\mathrm{km}\to x\mathrm{km}=0.000216\mathrm{km}$

Conclusion: $216 ⁢ mm = 0.000216 ⁢ km$

## Conversion in the opposite direction

The inverse of the conversion factor is that 1 kilometer is equal to 4629.62962962963 times 216 millimeters.

It can also be expressed as: 216 millimeters is equal to $\frac{1}{\mathrm{4629.62962962963}}$ kilometers.

## Approximation

An approximate numerical result would be: two hundred and sixteen millimeters is about zero kilometers, or alternatively, a kilometer is about four thousand, six hundred and twenty-nine point six three times two hundred and sixteen millimeters.

## Footnotes

[1] The precision is 15 significant digits (fourteen digits to the right of the decimal point).

Results may contain small errors due to the use of floating point arithmetic.