Volumetric flow rate.
Cubic Kilometer per Hours to Cubic Meters per Millisecond Converter — km3/h to m3/ms
Convert Cubic Kilometer per Hours (km3/h) to Cubic Meter per Millisecond (m3/ms) using the exact conversion factor (1 cubic kilometer per hours = 277.7777778 cubic meter per millisecond). See the formula, worked examples, and conversion table.
Cubic Kilometer per Hours to Cubic Meters per Millisecond converter
Converter
Flow Rate Converter
Convert volumetric flow rates across metric, US, imperial, industrial, and scientific units.
Context values
Some unit families need one extra value for a physically accurate result.
Volumetric flow rate.
Result = input x 277777.7778 / 1000.
Flow rate uses cubic meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Cubic Kilometer per Hours to Cubic Meters per Millisecond
Cubic Kilometer per Hours and Cubic Meter per Millisecond both measure volumetric flow rate — how much volume passes a point over time — used to size pipes and pumps, monitor river or stream discharge, control industrial processes, and set medical infusion rates. Both are volumetric flow rate units.
Formula
cubic meters per millisecond = cubic kilometer per hours × 277.777777778
This factor comes from each unit's defined relationship to the category's base unit: 1 cubic kilometer per hours equals 277777.777778 base units, and 1 cubic meter per millisecond equals 1000 base units, so dividing one by the other gives the direct cubic kilometer per hours-to-cubic meter per millisecond factor of 277.777777778.
Simple example
1 km3/h × 277.7777778 = 277.7777778 m3/ms
1 cubic kilometer per hours = 277.7777778 cubic meters per millisecond.
Real-world example
60 km3/h × 277.7777778 = 16,666.66667 m3/ms
60 cubic kilometer per hours = 16,666.66667 cubic meters per millisecond.
Conversion table
| Cubic Kilometer per Hours (km3/h) | Cubic Meter per Millisecond (m3/ms) |
|---|---|
| 0.1 km3/h | 27.77777778 m3/ms |
| 1 km3/h | 277.7777778 m3/ms |
| 10 km3/h | 2,777.777778 m3/ms |
| 60 km3/h | 16,666.66667 m3/ms |
| 100 km3/h | 27,777.77778 m3/ms |
| 1,000 km3/h | 277,777.7778 m3/ms |
Reverse conversion: Cubic Meter per Millisecond to Cubic Kilometer per Hours
277.7777778 m3/ms × 0.0036 = 1 km3/h
277.7777778 cubic meters per millisecond = 1 cubic kilometer per hours.
cubic kilometer per hours = cubic meters per millisecond × 0.0036
For a page dedicated to this direction, see Cubic Meter per Millisecond to Cubic Kilometer per Hours.
Understanding the Cubic Kilometer per Hours (km3/h)
Volumetric flow rate.
Understanding the Cubic Meter per Millisecond (m3/ms)
Volumetric flow rate.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many cubic meters per millisecond are in 1 cubic kilometer per hours?
1 cubic kilometer per hours equals 277.7777778 cubic meters per millisecond, using the exact defined conversion factor rather than an estimate.
How do I convert cubic kilometer per hours to cubic meter per millisecond?
Multiply the cubic kilometer per hours value by 277.7777778. The converter above does this instantly to whatever precision you set.
How do I convert cubic meter per millisecond back to cubic kilometer per hours?
Use the reverse factor: 1 cubic meter per millisecond equals 0.0036 cubic kilometer per hours. You can also use the swap control in the converter above to flip the direction instantly.
What is a cubic kilometer per hours?
Cubic Kilometer per Hours (km3/h) is a unit of flow rate.
What is a cubic meter per millisecond?
Cubic Meter per Millisecond (m3/ms) is a unit of flow rate.
Is the cubic kilometer per hours to cubic meter per millisecond conversion exact?
Yes. Both cubic kilometer per hours and cubic meter per millisecond are defined by fixed standards rather than physical artifacts, so the factor of 277.7777778 used above is exact to as many digits as you choose to display.
What's the difference between volumetric and mass flow rate?
Volumetric flow rate measures the volume of fluid passing a point per unit time (for example, liters per second). Mass flow rate measures the mass instead. For a fluid of constant density the two are directly proportional, but for compressible fluids like gases, mass flow is often the more meaningful quantity.