Volumetric flow rate.
Cubic Kilometer per Hours to Cubic Kilometer per Seconds Converter — km3/h to km3/s
Convert Cubic Kilometer per Hours (km3/h) to Cubic Kilometer per Seconds (km3/s) using the exact conversion factor (1 cubic kilometer per hours = 0.0002777778 cubic kilometer per seconds). See the formula, worked examples, and conversion table.
Cubic Kilometer per Hours to Cubic Kilometer per Seconds 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 / 1e+9.
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 Kilometer per Seconds
Cubic Kilometer per Hours and Cubic Kilometer per Seconds 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 kilometer per seconds = cubic kilometer per hours × 0.000277777777778
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 kilometer per seconds equals 1000000000 base units, so dividing one by the other gives the direct cubic kilometer per hours-to-cubic kilometer per seconds factor of 0.000277777777778.
Simple example
1 km3/h × 0.0002777777778 = 0.0002777778 km3/s
1 cubic kilometer per hours = 0.0002777778 cubic kilometer per seconds.
Real-world example
60 km3/h × 0.0002777777778 = 0.0166666667 km3/s
60 cubic kilometer per hours = 0.0166666667 cubic kilometer per seconds.
Conversion table
| Cubic Kilometer per Hours (km3/h) | Cubic Kilometer per Seconds (km3/s) |
|---|---|
| 0.1 km3/h | 0.0000277778 km3/s |
| 1 km3/h | 0.0002777778 km3/s |
| 10 km3/h | 0.0027777778 km3/s |
| 60 km3/h | 0.0166666667 km3/s |
| 100 km3/h | 0.0277777778 km3/s |
| 1,000 km3/h | 0.2777777778 km3/s |
Reverse conversion: Cubic Kilometer per Seconds to Cubic Kilometer per Hours
0.0002777778 km3/s × 3600 = 1.00000008 km3/h
0.0002777778 cubic kilometer per seconds = 1.00000008 cubic kilometer per hours.
cubic kilometer per hours = cubic kilometer per seconds × 3600
For a page dedicated to this direction, see Cubic Kilometer per Seconds to Cubic Kilometer per Hours.
Understanding the Cubic Kilometer per Hours (km3/h)
Volumetric flow rate.
Understanding the Cubic Kilometer per Seconds (km3/s)
Volumetric flow rate.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many cubic kilometer per seconds are in 1 cubic kilometer per hours?
1 cubic kilometer per hours equals 0.0002777778 cubic kilometer per seconds, using the exact defined conversion factor rather than an estimate.
How do I convert cubic kilometer per hours to cubic kilometer per seconds?
Multiply the cubic kilometer per hours value by 0.0002777777778. The converter above does this instantly to whatever precision you set.
How do I convert cubic kilometer per seconds back to cubic kilometer per hours?
Use the reverse factor: 1 cubic kilometer per seconds equals 3,600 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 kilometer per seconds?
Cubic Kilometer per Seconds (km3/s) is a unit of flow rate.
Is the cubic kilometer per hours to cubic kilometer per seconds conversion exact?
Yes. Both cubic kilometer per hours and cubic kilometer per seconds are defined by fixed standards rather than physical artifacts, so the factor of 0.0002777777778 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.