How many cubic kilometre/hour in 1 cubic millimetre/hour?
The answer is 1.0E-18.

We assume you are converting between **cubic kilometre/hour** and **cubic millimetre/hour**.

You can view more details on each measurement unit:

cubic kilometre/hour or
cubic millimetre/hour

The SI derived unit for **volume flow rate** is the cubic meter/second.

1 cubic meter/second is equal to 3.6E-6 cubic kilometre/hour, or 3.6E+12 cubic millimetre/hour.

Note that rounding errors may occur, so always check the results.

Use this page to learn how to convert between cubic kilometers/hour and cubic millimeters/hour.

Type in your own numbers in the form to convert the units!

You can do the reverse unit conversion from cubic millimetre/hour to cubic kilometre/hour, or enter any two units below:

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