Volumetric flow rate.
Gallon per Years to Cup per Days Converter — gal/yr to cup/d
Convert Gallon per Years (gal/yr) to Cup per Days (cup/d) using the exact conversion factor (1 gallon per years = 0.0438065121 cup per days). See the formula, worked examples, and conversion table.
Gallon per Years 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 1.19954924e-10 / 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 Years to Cup per Days
Gallon per Years 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 years × 0.0438065121118
This factor comes from each unit's defined relationship to the category's base unit: 1 gallon per years equals 1.199549e-10 base units, and 1 cup per days equals 2.73829e-9 base units, so dividing one by the other gives the direct gallon per years-to-cup per days factor of 0.0438065121118.
Simple example
1 gal/yr × 0.04380651211 = 0.0438065121 cup/d
1 gallon per years = 0.0438065121 cup per days.
Real-world example
60 gal/yr × 0.04380651211 = 2.628390727 cup/d
60 gallon per years = 2.628390727 cup per days.
Conversion table
| Gallon per Years (gal/yr) | Cup per Days (cup/d) |
|---|---|
| 0.1 gal/yr | 0.0043806512 cup/d |
| 1 gal/yr | 0.0438065121 cup/d |
| 10 gal/yr | 0.4380651211 cup/d |
| 60 gal/yr | 2.628390727 cup/d |
| 100 gal/yr | 4.380651211 cup/d |
| 1,000 gal/yr | 43.80651211 cup/d |
Reverse conversion: Cup per Days to Gallon per Years
0.0438065121 cup/d × 22.82765625 = 0.9999999997 gal/yr
0.0438065121 cup per days = 0.9999999997 gallon per years.
gallon per years = cup per days × 22.82765625
For a page dedicated to this direction, see Cup per Days to Gallon per Years.
Understanding the Gallon per Years (gal/yr)
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 years?
1 gallon per years equals 0.0438065121 cup per days, using the exact defined conversion factor rather than an estimate.
How do I convert gallon per years to cup per days?
Multiply the gallon per years value by 0.04380651211. The converter above does this instantly to whatever precision you set.
How do I convert cup per days back to gallon per years?
Use the reverse factor: 1 cup per days equals 22.82765625 gallon per years. You can also use the swap control in the converter above to flip the direction instantly.
What is a gallon per years?
Gallon per Years (gal/yr) 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 years to cup per days conversion exact?
Yes. Both gallon per years and cup per days are defined by fixed standards rather than physical artifacts, so the factor of 0.04380651211 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.