Volumetric flow rate.
Gallon per Days to Imperial gallon per Years Converter — gal/d to imp gal/yr
Convert Gallon per Days (gal/d) to Imperial gallon per Years (imp gal/yr) using the exact conversion factor (1 gallon per days = 304.1280009 imperial gallon per years). See the formula, worked examples, and conversion table.
Gallon per Days to Imperial 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 / 1.44059857e-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 Imperial gallon per Years
Gallon per Days and Imperial 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
imperial gallon per years = gallon per days × 304.128000879
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 imperial gallon per years equals 1.440599e-10 base units, so dividing one by the other gives the direct gallon per days-to-imperial gallon per years factor of 304.128000879.
Simple example
1 gal/d × 304.1280009 = 304.1280009 imp gal/yr
1 gallon per days = 304.1280009 imperial gallon per years.
Real-world example
60 gal/d × 304.1280009 = 18,247.68005 imp gal/yr
60 gallon per days = 18,247.68005 imperial gallon per years.
Conversion table
| Gallon per Days (gal/d) | Imperial gallon per Years (imp gal/yr) |
|---|---|
| 0.1 gal/d | 30.41280009 imp gal/yr |
| 1 gal/d | 304.1280009 imp gal/yr |
| 10 gal/d | 3,041.280009 imp gal/yr |
| 60 gal/d | 18,247.68005 imp gal/yr |
| 100 gal/d | 30,412.80009 imp gal/yr |
| 1,000 gal/d | 304,128.0009 imp gal/yr |
Reverse conversion: Imperial gallon per Years to Gallon per Days
304.1280009 imp gal/yr × 0.003288089216 = 1 gal/d
304.1280009 imperial gallon per years = 1 gallon per days.
gallon per days = imperial gallon per years × 0.00328808921608
For a page dedicated to this direction, see Imperial gallon per Years to Gallon per Days.
Understanding the Gallon per Days (gal/d)
Volumetric flow rate.
Understanding the Imperial gallon per Years (imp gal/yr)
Volumetric flow rate.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many imperial gallon per years are in 1 gallon per days?
1 gallon per days equals 304.1280009 imperial gallon per years, using the exact defined conversion factor rather than an estimate.
How do I convert gallon per days to imperial gallon per years?
Multiply the gallon per days value by 304.1280009. The converter above does this instantly to whatever precision you set.
How do I convert imperial gallon per years back to gallon per days?
Use the reverse factor: 1 imperial gallon per years equals 0.0032880892 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 imperial gallon per years?
Imperial gallon per Years (imp gal/yr) is a unit of flow rate.
Is the gallon per days to imperial gallon per years conversion exact?
Yes. Both gallon per days and imperial gallon per years are defined by fixed standards rather than physical artifacts, so the factor of 304.1280009 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.