Volumetric flow rate.
Imperial gallon per Days to Cubic Millimeter per Days Converter — imp gal/d to mm3/d
Convert Imperial gallon per Days (imp gal/d) to Cubic Millimeter per Days (mm3/d) using the exact conversion factor (1 imperial gallon per days = 4,546,090 cubic millimeter per days). See the formula, worked examples, and conversion table.
Imperial gallon per Days to Cubic Millimeter 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 5.26167824e-8 / 1.15740741e-14.
Flow rate uses cubic meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Imperial gallon per Days to Cubic Millimeter per Days
Imperial gallon per Days and Cubic Millimeter 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
cubic millimeter per days = imperial gallon per days × 4546090
This factor comes from each unit's defined relationship to the category's base unit: 1 imperial gallon per days equals 5.261678e-8 base units, and 1 cubic millimeter per days equals 1.157407e-14 base units, so dividing one by the other gives the direct imperial gallon per days-to-cubic millimeter per days factor of 4546090.
Simple example
1 imp gal/d × 4546090 = 4,546,090 mm3/d
1 imperial gallon per days = 4,546,090 cubic millimeter per days.
Real-world example
60 imp gal/d × 4546090 = 272,765,400 mm3/d
60 imperial gallon per days = 272,765,400 cubic millimeter per days.
Conversion table
| Imperial gallon per Days (imp gal/d) | Cubic Millimeter per Days (mm3/d) |
|---|---|
| 0.1 imp gal/d | 454,609 mm3/d |
| 1 imp gal/d | 4,546,090 mm3/d |
| 10 imp gal/d | 45,460,900 mm3/d |
| 60 imp gal/d | 272,765,400 mm3/d |
| 100 imp gal/d | 454,609,000 mm3/d |
| 1,000 imp gal/d | 4,546,090,000 mm3/d |
Reverse conversion: Cubic Millimeter per Days to Imperial gallon per Days
1 mm3/d × 2.199692e-7 = 2.199692e-7 imp gal/d
1 cubic millimeter per days = 2.199692e-7 imperial gallon per days.
imperial gallon per days = cubic millimeter per days × 2.199692e-7
For a page dedicated to this direction, see Cubic Millimeter per Days to Imperial gallon per Days.
Understanding the Imperial gallon per Days (imp gal/d)
Volumetric flow rate.
Understanding the Cubic Millimeter per Days (mm3/d)
Volumetric flow rate.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many cubic millimeter per days are in 1 imperial gallon per days?
1 imperial gallon per days equals 4,546,090 cubic millimeter per days, using the exact defined conversion factor rather than an estimate.
How do I convert imperial gallon per days to cubic millimeter per days?
Multiply the imperial gallon per days value by 4546090. The converter above does this instantly to whatever precision you set.
How do I convert cubic millimeter per days back to imperial gallon per days?
Use the reverse factor: 1 cubic millimeter per days equals 2.199692e-7 imperial gallon per days. You can also use the swap control in the converter above to flip the direction instantly.
What is a imperial gallon per days?
Imperial gallon per Days (imp gal/d) is a unit of flow rate.
What is a cubic millimeter per days?
Cubic Millimeter per Days (mm3/d) is a unit of flow rate.
Is the imperial gallon per days to cubic millimeter per days conversion exact?
Yes. Both imperial gallon per days and cubic millimeter per days are defined by fixed standards rather than physical artifacts, so the factor of 4546090 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.