Cubic Feet per Day to Cups per Second
Convert Cubic Feet per Day to Cups per Second instantly. Free online flow rate unit converter with exact formula, conversion table and FAQ.
Reserved for a responsive leaderboard above the conversion details.
Professional calculator style
World-scale conversion engine
30+ categories
6,500+ units
Instant results
Offline ready
Converter
Length Converter
Convert metric, imperial, and nautical distance units.
Context values
Some unit families need one extra value for a physically accurate result.
Use the converter to see the formula.
Results update instantly for Cubic Feet per Day to Cups per Second conversions.
Reserved above the conversion cards and below the converter.
Formula
cup/s = ft3/d × 0.00138528
ft3/d = cup/s ÷ 0.00138528
Conversion table
| 1 ft3/d | 0.00138528 cup/s |
| 5 ft3/d | 0.00692641 cup/s |
| 10 ft3/d | 0.0138528 cup/s |
| 20 ft3/d | 0.0277056 cup/s |
| 50 ft3/d | 0.0692641 cup/s |
| 100 ft3/d | 0.138528 cup/s |
| 500 ft3/d | 0.692641 cup/s |
| 1000 ft3/d | 1.38528 cup/s |
Related conversions
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
What is the source unit in this conversion?
The source unit is cubic feet per day (ft3/d). The Cubic Foot (ft3) is a unit of volume. The Day (d) is a unit of time.
What is the destination unit in this conversion?
The destination unit is cups per second (cup/s). The Cup (cup) is a unit of volume. The Second (s) is a unit of time.
How do I convert cubic feet per day to cups per second?
Multiply the cubic feet per day value by 0.00138528 to get cups per second. For example, 10 ft3/d × 0.00138528 = 0.0138528 cup/s.
Is the cubic feet per day to cups per second conversion exact?
It's exact under the SI-based volume and time definitions used here, since both units convert to cubic meters per second through fixed, non-rounded factors.
Where is this conversion commonly used?
Flow rate conversions like this are used in plumbing, HVAC, irrigation, chemical processing, fuel and water metering, and engineering flow calculations.
Can I convert cups per second back to cubic feet per day?
Yes. Divide the cups per second value by 0.00138528 (or multiply by 721.875) to get cubic feet per day.
Reserved between the FAQ and the article so the page stays balanced.
About this conversion
This page converts cubic feet per day (ft3/d) into cups per second (cup/s), two units of volumetric flow rate.
The Cubic Foot (ft3) is a unit of volume. The Day (d) is a unit of time.
The Cup (cup) is a unit of volume. The Second (s) is a unit of time.
The formula is cup/s = ft3/d × 0.00138528, based on the fixed relationship between these two flow rate units.
Flow rate is calculated as a volume unit divided by a time unit, so every combination of a volume unit and a time unit forms a valid, exact flow rate unit.