Volumetric flow rate.
Imperial quarts per Millisecond to Cubic foot per Seconds Converter — imp qt/ms to ft3/s
Convert Imperial quart per Millisecond (imp qt/ms) to Cubic foot per Seconds (ft3/s) using the exact conversion factor (1 imperial quart per millisecond = 40.13591331 cubic foot per seconds). See the formula, worked examples, conversion table, and common uses.
Imperial quarts per Millisecond 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 1.1365225 / 0.02831684659.
Flow rate uses cubic meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Imperial quarts per Millisecond to Cubic foot per Seconds
Imperial quart per Millisecond 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 = imperial quarts per millisecond × 40.135913309
This factor comes from each unit's defined relationship to the category's base unit: 1 imperial quart per millisecond equals 1.1365225 base units, and 1 cubic foot per seconds equals 0.028316846592 base units, so dividing one by the other gives the direct imperial quart per millisecond-to-cubic foot per seconds factor of 40.135913309.
Simple example
1 imp qt/ms × 40.13591331 = 40.13591331 ft3/s
1 imperial quart per millisecond = 40.13591331 cubic foot per seconds.
Real-world example
60 imp qt/ms × 40.13591331 = 2,408.154799 ft3/s
60 imperial quarts per millisecond = 2,408.154799 cubic foot per seconds.
Conversion table
| Imperial quart per Millisecond (imp qt/ms) | Cubic foot per Seconds (ft3/s) |
|---|---|
| 0.1 imp qt/ms | 4.013591331 ft3/s |
| 1 imp qt/ms | 40.13591331 ft3/s |
| 10 imp qt/ms | 401.3591331 ft3/s |
| 60 imp qt/ms | 2,408.154799 ft3/s |
| 100 imp qt/ms | 4,013.591331 ft3/s |
| 1,000 imp qt/ms | 40,135.91331 ft3/s |
Reverse conversion: Cubic foot per Seconds to Imperial quart per Millisecond
40.13591331 ft3/s × 0.02491534184 = 1 imp qt/ms
40.13591331 cubic foot per seconds = 1 imperial quarts per millisecond.
imperial quarts per millisecond = cubic foot per seconds × 0.0249153418362
For a page dedicated to this direction, see Cubic foot per Seconds to Imperial quart per Millisecond.
Understanding the Imperial quart per Millisecond (imp qt/ms)
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 imperial quart per millisecond?
1 imperial quart per millisecond equals 40.13591331 cubic foot per seconds, using the exact defined conversion factor rather than an estimate.
How do I convert imperial quart per millisecond to cubic foot per seconds?
Multiply the imperial quart per millisecond value by 40.13591331. The converter above does this instantly to whatever precision you set.
How do I convert cubic foot per seconds back to imperial quart per millisecond?
Use the reverse factor: 1 cubic foot per seconds equals 0.0249153418 imperial quarts per millisecond. You can also use the swap control in the converter above to flip the direction instantly.
What is a imperial quart per millisecond?
Imperial quart per Millisecond (imp qt/ms) 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 imperial quart per millisecond to cubic foot per seconds conversion exact?
Yes. Both imperial quart per millisecond and cubic foot per seconds are defined by fixed standards rather than physical artifacts, so the factor of 40.13591331 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.