Volumetric flow rate.
Cubic Kilometer per Years to Cubic Meter per Seconds Converter — km3/yr to m3/s
Convert Cubic Kilometer per Years (km3/yr) to Cubic Meter per Seconds (m3/s) using the exact conversion factor (1 cubic kilometer per years = 31.68873851 cubic meter per seconds). See the formula, worked examples, conversion table, and common uses.
Cubic Kilometer per Years to Cubic Meter 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 31.68873851 / 1.
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 Years to Cubic Meter per Seconds
Cubic Kilometer per Years and Cubic Meter 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 meter per seconds = cubic kilometer per years × 31.6887385068
This factor comes from each unit's defined relationship to the category's base unit: 1 cubic kilometer per years equals 31.6887385068 base units, and 1 cubic meter per seconds equals 1 base unit, so dividing one by the other gives the direct cubic kilometer per years-to-cubic meter per seconds factor of 31.6887385068.
Simple example
1 km3/yr × 31.68873851 = 31.68873851 m3/s
1 cubic kilometer per years = 31.68873851 cubic meter per seconds.
Real-world example
60 km3/yr × 31.68873851 = 1,901.32431 m3/s
60 cubic kilometer per years = 1,901.32431 cubic meter per seconds.
Conversion table
| Cubic Kilometer per Years (km3/yr) | Cubic Meter per Seconds (m3/s) |
|---|---|
| 0.1 km3/yr | 3.168873851 m3/s |
| 1 km3/yr | 31.68873851 m3/s |
| 10 km3/yr | 316.8873851 m3/s |
| 60 km3/yr | 1,901.32431 m3/s |
| 100 km3/yr | 3,168.873851 m3/s |
| 1,000 km3/yr | 31,688.73851 m3/s |
Reverse conversion: Cubic Meter per Seconds to Cubic Kilometer per Years
31.68873851 m3/s × 0.031556952 = 1 km3/yr
31.68873851 cubic meter per seconds = 1 cubic kilometer per years.
cubic kilometer per years = cubic meter per seconds × 0.031556952
For a page dedicated to this direction, see Cubic Meter per Seconds to Cubic Kilometer per Years.
Understanding the Cubic Kilometer per Years (km3/yr)
Volumetric flow rate.
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
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 meter per seconds are in 1 cubic kilometer per years?
1 cubic kilometer per years equals 31.68873851 cubic meter per seconds, using the exact defined conversion factor rather than an estimate.
How do I convert cubic kilometer per years to cubic meter per seconds?
Multiply the cubic kilometer per years value by 31.68873851. The converter above does this instantly to whatever precision you set.
How do I convert cubic meter per seconds back to cubic kilometer per years?
Use the reverse factor: 1 cubic meter per seconds equals 0.031556952 cubic kilometer per years. You can also use the swap control in the converter above to flip the direction instantly.
What is a cubic kilometer per years?
Cubic Kilometer per Years (km3/yr) is a unit of flow rate.
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.
Is the cubic kilometer per years to cubic meter per seconds conversion exact?
Yes. Both cubic kilometer per years and cubic meter per seconds are defined by fixed standards rather than physical artifacts, so the factor of 31.68873851 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.