Volumetric flow rate.
Cubic foot per Days to Cup per Seconds Converter — ft3/d to cup/s
Convert Cubic foot per Days (ft3/d) to Cup per Seconds (cup/s) using the exact conversion factor (1 cubic foot per days = 0.0013852814 cup per seconds). See the formula, worked examples, and conversion table.
Cubic foot per Days to Cup 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 3.2774128e-7 / 0.0002365882365.
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 Days to Cup per Seconds
Cubic foot per Days and Cup 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
cup per seconds = cubic foot per days × 0.00138528138528
This factor comes from each unit's defined relationship to the category's base unit: 1 cubic foot per days equals 3.277413e-7 base units, and 1 cup per seconds equals 0.0002365882365 base units, so dividing one by the other gives the direct cubic foot per days-to-cup per seconds factor of 0.00138528138528.
Simple example
1 ft3/d × 0.001385281385 = 0.0013852814 cup/s
1 cubic foot per days = 0.0013852814 cup per seconds.
Real-world example
60 ft3/d × 0.001385281385 = 0.0831168831 cup/s
60 cubic foot per days = 0.0831168831 cup per seconds.
Conversion table
| Cubic foot per Days (ft3/d) | Cup per Seconds (cup/s) |
|---|---|
| 0.1 ft3/d | 0.0001385281 cup/s |
| 1 ft3/d | 0.0013852814 cup/s |
| 10 ft3/d | 0.0138528139 cup/s |
| 60 ft3/d | 0.0831168831 cup/s |
| 100 ft3/d | 0.1385281385 cup/s |
| 1,000 ft3/d | 1.385281385 cup/s |
Reverse conversion: Cup per Seconds to Cubic foot per Days
0.0013852814 cup/s × 721.875 = 1.000000011 ft3/d
0.0013852814 cup per seconds = 1.000000011 cubic foot per days.
cubic foot per days = cup per seconds × 721.875
For a page dedicated to this direction, see Cup per Seconds to Cubic foot per Days.
Understanding the Cubic foot per Days (ft3/d)
Volumetric flow rate.
Understanding the Cup per Seconds (cup/s)
Volumetric flow rate.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many cup per seconds are in 1 cubic foot per days?
1 cubic foot per days equals 0.0013852814 cup per seconds, using the exact defined conversion factor rather than an estimate.
How do I convert cubic foot per days to cup per seconds?
Multiply the cubic foot per days value by 0.001385281385. The converter above does this instantly to whatever precision you set.
How do I convert cup per seconds back to cubic foot per days?
Use the reverse factor: 1 cup per seconds equals 721.875 cubic foot per days. You can also use the swap control in the converter above to flip the direction instantly.
What is a cubic foot per days?
Cubic foot per Days (ft3/d) is a unit of flow rate.
What is a cup per seconds?
Cup per Seconds (cup/s) is a unit of flow rate.
Is the cubic foot per days to cup per seconds conversion exact?
Yes. Both cubic foot per days and cup per seconds are defined by fixed standards rather than physical artifacts, so the factor of 0.001385281385 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.