Volumetric flow rate.
Cubic Meter per Seconds to Cubic Kilometer per Hours Converter — m3/s to km3/h
Convert Cubic Meter per Seconds (m3/s) to Cubic Kilometer per Hours (km3/h) using the exact conversion factor (1 cubic meter per seconds = 0.0000036 cubic kilometer per hours). See the formula, worked examples, conversion table, and common uses.
Cubic Meter per Seconds to Cubic Kilometer per Hours 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 1 / 277777.7778.
Flow rate uses cubic meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Cubic Meter per Seconds to Cubic Kilometer per Hours
Cubic Meter per Seconds and Cubic Kilometer per Hours 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. Cubic Meter per Seconds is most often used for used by hydrologists and water-resource engineers internationally to report river and reservoir discharge at large scales.
Formula
cubic kilometer per hours = cubic meter per seconds × 0.0000036
This factor comes from each unit's defined relationship to the category's base unit: 1 cubic meter per seconds equals 1 base unit, and 1 cubic kilometer per hours equals 277777.777778 base units, so dividing one by the other gives the direct cubic meter per seconds-to-cubic kilometer per hours factor of 0.0000036.
Simple example
1 m3/s × 0.0000036 = 0.0000036 km3/h
1 cubic meter per seconds = 0.0000036 cubic kilometer per hours.
Real-world example
60 m3/s × 0.0000036 = 0.000216 km3/h
60 cubic meter per seconds = 0.000216 cubic kilometer per hours.
Conversion table
| Cubic Meter per Seconds (m3/s) | Cubic Kilometer per Hours (km3/h) |
|---|---|
| 0.1 m3/s | 3.6e-7 km3/h |
| 1 m3/s | 0.0000036 km3/h |
| 10 m3/s | 0.000036 km3/h |
| 60 m3/s | 0.000216 km3/h |
| 100 m3/s | 0.00036 km3/h |
| 1,000 m3/s | 0.0036 km3/h |
Reverse conversion: Cubic Kilometer per Hours to Cubic Meter per Seconds
0.0000036 km3/h × 277777.7778 = 1 m3/s
0.0000036 cubic kilometer per hours = 1 cubic meter per seconds.
cubic meter per seconds = cubic kilometer per hours × 277777.777778
For a page dedicated to this direction, see Cubic Kilometer per Hours to Cubic Meter per Seconds.
Understanding the Cubic Meter per Seconds
Cubic Meter per Seconds (m3/s) measures volumetric flow rate. The SI coherent unit for volumetric flow rate — one cubic meter of volume passing a point every second. It is classified as a SI coherent derived unit.
Where it's used: Used internationally in hydrology and large-scale water-resource engineering
Uses of the Cubic Meter per Seconds today
- Used by hydrologists and water-resource engineers internationally to report river and reservoir discharge at large scales
Understanding the Cubic Kilometer per Hours (km3/h)
Volumetric flow rate.
Cubic Meter per Seconds — sources
- BIPM SI Brochure — Cubic meter per second as the SI coherent derived unit for volumetric flow rate.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many cubic kilometer per hours are in 1 cubic meter per seconds?
1 cubic meter per seconds equals 0.0000036 cubic kilometer per hours, using the exact defined conversion factor rather than an estimate.
How do I convert cubic meter per seconds to cubic kilometer per hours?
Multiply the cubic meter per seconds value by 0.0000036. The converter above does this instantly to whatever precision you set.
How do I convert cubic kilometer per hours back to cubic meter per seconds?
Use the reverse factor: 1 cubic kilometer per hours equals 277,777.7778 cubic meter per seconds. You can also use the swap control in the converter above to flip the direction instantly.
What is a cubic meter per seconds?
Cubic Meter per Seconds (m3/s) measures volumetric flow rate. The SI coherent unit for volumetric flow rate — one cubic meter of volume passing a point every second. It is classified as a SI coherent derived unit.
What is a cubic kilometer per hours?
Cubic Kilometer per Hours (km3/h) is a unit of flow rate.
Is the cubic meter per seconds to cubic kilometer per hours conversion exact?
Yes. Both cubic meter per seconds and cubic kilometer per hours are defined by fixed standards rather than physical artifacts, so the factor of 0.0000036 used above is exact to as many digits as you choose to display.
Where is the cubic meter per seconds still used today?
Used internationally in hydrology and large-scale water-resource engineering
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.