Volumetric flow rate.
Cubic Kilometer per Hours to Cubic foot per Seconds Converter — km3/h to ft3/s
Convert Cubic Kilometer per Hours (km3/h) to Cubic foot per Seconds (ft3/s) using the exact conversion factor (1 cubic kilometer per hours = 9,809,629.645 cubic foot per seconds). See the formula, worked examples, conversion table, and common uses.
Cubic Kilometer per Hours to Cubic foot 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 / 0.02831684659.
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 foot per Seconds
Cubic Kilometer per Hours and Cubic foot 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 foot per seconds = cubic kilometer per hours × 9809629.64486
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 foot per seconds equals 0.028316846592 base units, so dividing one by the other gives the direct cubic kilometer per hours-to-cubic foot per seconds factor of 9809629.64486.
Simple example
1 km3/h × 9809629.645 = 9,809,629.645 ft3/s
1 cubic kilometer per hours = 9,809,629.645 cubic foot per seconds.
Real-world example
60 km3/h × 9809629.645 = 588,577,778.7 ft3/s
60 cubic kilometer per hours = 588,577,778.7 cubic foot per seconds.
Conversion table
| Cubic Kilometer per Hours (km3/h) | Cubic foot per Seconds (ft3/s) |
|---|---|
| 0.1 km3/h | 980,962.9645 ft3/s |
| 1 km3/h | 9,809,629.645 ft3/s |
| 10 km3/h | 98,096,296.45 ft3/s |
| 60 km3/h | 588,577,778.7 ft3/s |
| 100 km3/h | 980,962,964.5 ft3/s |
| 1,000 km3/h | 9,809,629,645 ft3/s |
Reverse conversion: Cubic foot per Seconds to Cubic Kilometer per Hours
1 ft3/s × 1.019406e-7 = 1.019406e-7 km3/h
1 cubic foot per seconds = 1.019406e-7 cubic kilometer per hours.
cubic kilometer per hours = cubic foot per seconds × 1.019406e-7
For a page dedicated to this direction, see Cubic foot per Seconds to Cubic Kilometer per Hours.
Understanding the Cubic Kilometer per Hours (km3/h)
Volumetric flow rate.
Understanding the Cubic foot per Seconds
Cubic foot per Seconds (ft3/s) measures volumetric flow rate. One cubic foot of volume passing a point every second. It is classified as a US customary flow-rate unit.
Where it's used: United States
Uses of the Cubic foot per Seconds today
- The standard unit used by the US Geological Survey for reporting river and stream discharge at gauging stations
Cubic foot per Seconds — sources
- USGS Water Science School — Cubic feet per second (cfs) is the standard unit USGS uses to report streamflow.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many cubic foot per seconds are in 1 cubic kilometer per hours?
1 cubic kilometer per hours equals 9,809,629.645 cubic foot per seconds, using the exact defined conversion factor rather than an estimate.
How do I convert cubic kilometer per hours to cubic foot per seconds?
Multiply the cubic kilometer per hours value by 9809629.645. The converter above does this instantly to whatever precision you set.
How do I convert cubic foot per seconds back to cubic kilometer per hours?
Use the reverse factor: 1 cubic foot per seconds equals 1.019406e-7 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 foot per seconds?
Cubic foot per Seconds (ft3/s) measures volumetric flow rate. One cubic foot of volume passing a point every second. It is classified as a US customary flow-rate unit.
Is the cubic kilometer per hours to cubic foot per seconds conversion exact?
Yes. Both cubic kilometer per hours and cubic foot per seconds are defined by fixed standards rather than physical artifacts, so the factor of 9809629.645 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.