Volumetric flow rate.
Gallon per Days to Cup per Days Converter — gal/d to cup/d
Convert Gallon per Days (gal/d) to Cup per Days (cup/d) using the exact conversion factor (1 gallon per days = 16 cup per days). See the formula, worked examples, and conversion table.
Gallon per Days to Cup per Days 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 4.38126364e-8 / 2.73828977e-9.
Flow rate uses cubic meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Gallon per Days to Cup per Days
Gallon per Days and Cup per Days 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 days = gallon per days × 16
This factor comes from each unit's defined relationship to the category's base unit: 1 gallon per days equals 4.381264e-8 base units, and 1 cup per days equals 2.73829e-9 base units, so dividing one by the other gives the direct gallon per days-to-cup per days factor of 16.
Simple example
1 gal/d × 16 = 16 cup/d
1 gallon per days = 16 cup per days.
Real-world example
60 gal/d × 16 = 960 cup/d
60 gallon per days = 960 cup per days.
Conversion table
| Gallon per Days (gal/d) | Cup per Days (cup/d) |
|---|---|
| 0.1 gal/d | 1.6 cup/d |
| 1 gal/d | 16 cup/d |
| 10 gal/d | 160 cup/d |
| 60 gal/d | 960 cup/d |
| 100 gal/d | 1,600 cup/d |
| 1,000 gal/d | 16,000 cup/d |
Reverse conversion: Cup per Days to Gallon per Days
16 cup/d × 0.0625 = 1 gal/d
16 cup per days = 1 gallon per days.
gallon per days = cup per days × 0.0625
For a page dedicated to this direction, see Cup per Days to Gallon per Days.
Understanding the Gallon per Days (gal/d)
Volumetric flow rate.
Understanding the Cup per Days (cup/d)
Volumetric flow rate.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many cup per days are in 1 gallon per days?
1 gallon per days equals 16 cup per days, using the exact defined conversion factor rather than an estimate.
How do I convert gallon per days to cup per days?
Multiply the gallon per days value by 16. The converter above does this instantly to whatever precision you set.
How do I convert cup per days back to gallon per days?
Use the reverse factor: 1 cup per days equals 0.0625 gallon per days. You can also use the swap control in the converter above to flip the direction instantly.
What is a gallon per days?
Gallon per Days (gal/d) is a unit of flow rate.
What is a cup per days?
Cup per Days (cup/d) is a unit of flow rate.
Is the gallon per days to cup per days conversion exact?
Yes. Both gallon per days and cup per days are defined by fixed standards rather than physical artifacts, so the factor of 16 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.