Volumetric flow rate.
Cubic Millimeters per Millisecond to Cubic Kilometers per Millisecond Converter — mm3/ms to km3/ms
Convert Cubic Millimeter per Millisecond (mm3/ms) to Cubic Kilometer per Millisecond (km3/ms) using the exact conversion factor (1 cubic millimeter per millisecond = 1e-18 cubic kilometer per millisecond). See the formula, worked examples, and conversion table.
Cubic Millimeters per Millisecond to Cubic Kilometers 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 1e-6 / 1e+12.
Flow rate uses cubic meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Cubic Millimeters per Millisecond to Cubic Kilometers per Millisecond
Cubic Millimeter per Millisecond and Cubic Kilometer 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 kilometers per millisecond = cubic millimeters per millisecond × 1e-18
This factor comes from each unit's defined relationship to the category's base unit: 1 cubic millimeter per millisecond equals 0.000001 base units, and 1 cubic kilometer per millisecond equals 1e+12 base units, so dividing one by the other gives the direct cubic millimeter per millisecond-to-cubic kilometer per millisecond factor of 1e-18.
Simple example
1 mm3/ms × 1e-18 = 1e-18 km3/ms
1 cubic millimeter per millisecond = 1e-18 cubic kilometers per millisecond.
Real-world example
60 mm3/ms × 1e-18 = 6e-17 km3/ms
60 cubic millimeters per millisecond = 6e-17 cubic kilometers per millisecond.
Conversion table
| Cubic Millimeter per Millisecond (mm3/ms) | Cubic Kilometer per Millisecond (km3/ms) |
|---|---|
| 0.1 mm3/ms | 1e-19 km3/ms |
| 1 mm3/ms | 1e-18 km3/ms |
| 10 mm3/ms | 1e-17 km3/ms |
| 60 mm3/ms | 6e-17 km3/ms |
| 100 mm3/ms | 1e-16 km3/ms |
| 1,000 mm3/ms | 1e-15 km3/ms |
Reverse conversion: Cubic Kilometer per Millisecond to Cubic Millimeter per Millisecond
1e-18 km3/ms × 1e+18 = 1 mm3/ms
1e-18 cubic kilometers per millisecond = 1 cubic millimeters per millisecond.
cubic millimeters per millisecond = cubic kilometers per millisecond × 1e+18
For a page dedicated to this direction, see Cubic Kilometer per Millisecond to Cubic Millimeter per Millisecond.
Understanding the Cubic Millimeter per Millisecond (mm3/ms)
Volumetric flow rate.
Understanding the Cubic Kilometer per Millisecond (km3/ms)
Volumetric flow rate.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many cubic kilometers per millisecond are in 1 cubic millimeter per millisecond?
1 cubic millimeter per millisecond equals 1e-18 cubic kilometers per millisecond, using the exact defined conversion factor rather than an estimate.
How do I convert cubic millimeter per millisecond to cubic kilometer per millisecond?
Multiply the cubic millimeter per millisecond value by 1e-18. The converter above does this instantly to whatever precision you set.
How do I convert cubic kilometer per millisecond back to cubic millimeter per millisecond?
Use the reverse factor: 1 cubic kilometer per millisecond equals 1e+18 cubic millimeters per millisecond. You can also use the swap control in the converter above to flip the direction instantly.
What is a cubic millimeter per millisecond?
Cubic Millimeter per Millisecond (mm3/ms) is a unit of flow rate.
What is a cubic kilometer per millisecond?
Cubic Kilometer per Millisecond (km3/ms) is a unit of flow rate.
Is the cubic millimeter per millisecond to cubic kilometer per millisecond conversion exact?
Yes. Both cubic millimeter per millisecond and cubic kilometer per millisecond are defined by fixed standards rather than physical artifacts, so the factor of 1e-18 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.
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