Volumetric flow rate.
Gallon per Days to Gallon per Years Converter — gal/d to gal/yr
Convert Gallon per Days (gal/d) to Gallon per Years (gal/yr) using the exact conversion factor (1 gallon per days = 365.2425 gallon per years). See the formula, worked examples, and conversion table.
Gallon per Days to Gallon per Years 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 / 1.19954924e-10.
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 Gallon per Years
Gallon per Days and Gallon per Years 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
gallon per years = gallon per days × 365.2425
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 gallon per years equals 1.199549e-10 base units, so dividing one by the other gives the direct gallon per days-to-gallon per years factor of 365.2425.
Simple example
1 gal/d × 365.2425 = 365.2425 gal/yr
1 gallon per days = 365.2425 gallon per years.
Real-world example
60 gal/d × 365.2425 = 21,914.55 gal/yr
60 gallon per days = 21,914.55 gallon per years.
Conversion table
| Gallon per Days (gal/d) | Gallon per Years (gal/yr) |
|---|---|
| 0.1 gal/d | 36.52425 gal/yr |
| 1 gal/d | 365.2425 gal/yr |
| 10 gal/d | 3,652.425 gal/yr |
| 60 gal/d | 21,914.55 gal/yr |
| 100 gal/d | 36,524.25 gal/yr |
| 1,000 gal/d | 365,242.5 gal/yr |
Reverse conversion: Gallon per Years to Gallon per Days
365.2425 gal/yr × 0.002737907007 = 1 gal/d
365.2425 gallon per years = 1 gallon per days.
gallon per days = gallon per years × 0.00273790700699
For a page dedicated to this direction, see Gallon per Years to Gallon per Days.
Understanding the Gallon per Days (gal/d)
Volumetric flow rate.
Understanding the Gallon per Years (gal/yr)
Volumetric flow rate.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many gallon per years are in 1 gallon per days?
1 gallon per days equals 365.2425 gallon per years, using the exact defined conversion factor rather than an estimate.
How do I convert gallon per days to gallon per years?
Multiply the gallon per days value by 365.2425. The converter above does this instantly to whatever precision you set.
How do I convert gallon per years back to gallon per days?
Use the reverse factor: 1 gallon per years equals 0.002737907 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 gallon per years?
Gallon per Years (gal/yr) is a unit of flow rate.
Is the gallon per days to gallon per years conversion exact?
Yes. Both gallon per days and gallon per years are defined by fixed standards rather than physical artifacts, so the factor of 365.2425 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.