Volumetric flow rate.
Cubic foot per Seconds to Cubic Millimeter per Years Converter — ft3/s to mm3/yr
Convert Cubic foot per Seconds (ft3/s) to Cubic Millimeter per Years (mm3/yr) using the exact conversion factor (1 cubic foot per seconds = 8.935934e+14 cubic millimeter per years). See the formula, worked examples, conversion table, and common uses.
Cubic foot per Seconds to Cubic Millimeter per Years 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 0.02831684659 / 3.16887385e-17.
Flow rate uses cubic meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Cubic foot per Seconds to Cubic Millimeter per Years
Cubic foot per Seconds and Cubic Millimeter per Years 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 foot per Seconds is most often used for the standard unit used by the us geological survey for reporting river and stream discharge at gauging stations.
Formula
cubic millimeter per years = cubic foot per seconds × 8.935934e+14
This factor comes from each unit's defined relationship to the category's base unit: 1 cubic foot per seconds equals 0.028316846592 base units, and 1 cubic millimeter per years equals 3.168874e-17 base units, so dividing one by the other gives the direct cubic foot per seconds-to-cubic millimeter per years factor of 8.935934e+14.
Simple example
1 ft3/s × 8.935934e+14 = 8.935934e+14 mm3/yr
1 cubic foot per seconds = 8.935934e+14 cubic millimeter per years.
Real-world example
60 ft3/s × 8.935934e+14 = 5.36156e+16 mm3/yr
60 cubic foot per seconds = 5.36156e+16 cubic millimeter per years.
Conversion table
| Cubic foot per Seconds (ft3/s) | Cubic Millimeter per Years (mm3/yr) |
|---|---|
| 0.1 ft3/s | 8.935934e+13 mm3/yr |
| 1 ft3/s | 8.935934e+14 mm3/yr |
| 10 ft3/s | 8.935934e+15 mm3/yr |
| 60 ft3/s | 5.36156e+16 mm3/yr |
| 100 ft3/s | 8.935934e+16 mm3/yr |
| 1,000 ft3/s | 8.935934e+17 mm3/yr |
Reverse conversion: Cubic Millimeter per Years to Cubic foot per Seconds
8.935934e+14 mm3/yr × 1.119077e-15 = 1.000000035 ft3/s
8.935934e+14 cubic millimeter per years = 1.000000035 cubic foot per seconds.
cubic foot per seconds = cubic millimeter per years × 1.119077e-15
For a page dedicated to this direction, see Cubic Millimeter per Years to Cubic foot per Seconds.
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
Understanding the Cubic Millimeter per Years (mm3/yr)
Volumetric flow rate.
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 millimeter per years are in 1 cubic foot per seconds?
1 cubic foot per seconds equals 8.935934e+14 cubic millimeter per years, using the exact defined conversion factor rather than an estimate.
How do I convert cubic foot per seconds to cubic millimeter per years?
Multiply the cubic foot per seconds value by 8.935934e+14. The converter above does this instantly to whatever precision you set.
How do I convert cubic millimeter per years back to cubic foot per seconds?
Use the reverse factor: 1 cubic millimeter per years equals 1.119077e-15 cubic foot per seconds. You can also use the swap control in the converter above to flip the direction instantly.
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.
What is a cubic millimeter per years?
Cubic Millimeter per Years (mm3/yr) is a unit of flow rate.
Is the cubic foot per seconds to cubic millimeter per years conversion exact?
Yes. Both cubic foot per seconds and cubic millimeter per years are defined by fixed standards rather than physical artifacts, so the factor of 8.935934e+14 used above is exact to as many digits as you choose to display.
Where is the cubic foot per seconds still used today?
United States
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.