Volumetric flow rate.
Cubic Millimeter per Hours to Imperial gallon per Hours Converter — mm3/h to imp gal/h
Convert Cubic Millimeter per Hours (mm3/h) to Imperial gallon per Hours (imp gal/h) using the exact conversion factor (1 cubic millimeter per hours = 2.199692e-7 imperial gallon per hours). See the formula, worked examples, and conversion table.
Cubic Millimeter per Hours to Imperial gallon per Hours 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 2.77777778e-13 / 1.26280278e-6.
Flow rate uses cubic meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Cubic Millimeter per Hours to Imperial gallon per Hours
Cubic Millimeter per Hours and Imperial gallon per Hours 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 hours = cubic millimeter per hours × 2.199692e-7
This factor comes from each unit's defined relationship to the category's base unit: 1 cubic millimeter per hours equals 2.777778e-13 base units, and 1 imperial gallon per hours equals 0.00000126280277778 base units, so dividing one by the other gives the direct cubic millimeter per hours-to-imperial gallon per hours factor of 2.199692e-7.
Simple example
1 mm3/h × 2.199692e-7 = 2.199692e-7 imp gal/h
1 cubic millimeter per hours = 2.199692e-7 imperial gallon per hours.
Real-world example
60 mm3/h × 2.199692e-7 = 0.0000131982 imp gal/h
60 cubic millimeter per hours = 0.0000131982 imperial gallon per hours.
Conversion table
| Cubic Millimeter per Hours (mm3/h) | Imperial gallon per Hours (imp gal/h) |
|---|---|
| 0.1 mm3/h | 2.199692e-8 imp gal/h |
| 1 mm3/h | 2.199692e-7 imp gal/h |
| 10 mm3/h | 0.0000021997 imp gal/h |
| 60 mm3/h | 0.0000131982 imp gal/h |
| 100 mm3/h | 0.0000219969 imp gal/h |
| 1,000 mm3/h | 0.0002199692 imp gal/h |
Reverse conversion: Imperial gallon per Hours to Cubic Millimeter per Hours
2.199692e-7 imp gal/h × 4546090 = 0.9999997804 mm3/h
2.199692e-7 imperial gallon per hours = 0.9999997804 cubic millimeter per hours.
cubic millimeter per hours = imperial gallon per hours × 4546090
For a page dedicated to this direction, see Imperial gallon per Hours to Cubic Millimeter per Hours.
Understanding the Cubic Millimeter per Hours (mm3/h)
Volumetric flow rate.
Understanding the Imperial gallon per Hours (imp gal/h)
Volumetric flow rate.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many imperial gallon per hours are in 1 cubic millimeter per hours?
1 cubic millimeter per hours equals 2.199692e-7 imperial gallon per hours, using the exact defined conversion factor rather than an estimate.
How do I convert cubic millimeter per hours to imperial gallon per hours?
Multiply the cubic millimeter per hours value by 2.199692e-7. The converter above does this instantly to whatever precision you set.
How do I convert imperial gallon per hours back to cubic millimeter per hours?
Use the reverse factor: 1 imperial gallon per hours equals 4,546,090 cubic millimeter per hours. You can also use the swap control in the converter above to flip the direction instantly.
What is a cubic millimeter per hours?
Cubic Millimeter per Hours (mm3/h) is a unit of flow rate.
What is a imperial gallon per hours?
Imperial gallon per Hours (imp gal/h) is a unit of flow rate.
Is the cubic millimeter per hours to imperial gallon per hours conversion exact?
Yes. Both cubic millimeter per hours and imperial gallon per hours are defined by fixed standards rather than physical artifacts, so the factor of 2.199692e-7 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.