Volumetric flow rate.
Gallon per Days to Milliliter per Hours Converter — gal/d to mL/h
Convert Gallon per Days (gal/d) to Milliliter per Hours (mL/h) using the exact conversion factor (1 gallon per days = 157.725491 milliliter per hours). See the formula, worked examples, and conversion table.
Gallon per Days to Milliliter 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 4.38126364e-8 / 2.77777778e-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 Milliliter per Hours
Gallon per Days and Milliliter 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
milliliter per hours = gallon per days × 157.725491
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 milliliter per hours equals 2.777778e-10 base units, so dividing one by the other gives the direct gallon per days-to-milliliter per hours factor of 157.725491.
Simple example
1 gal/d × 157.725491 = 157.725491 mL/h
1 gallon per days = 157.725491 milliliter per hours.
Real-world example
60 gal/d × 157.725491 = 9,463.52946 mL/h
60 gallon per days = 9,463.52946 milliliter per hours.
Conversion table
| Gallon per Days (gal/d) | Milliliter per Hours (mL/h) |
|---|---|
| 0.1 gal/d | 15.7725491 mL/h |
| 1 gal/d | 157.725491 mL/h |
| 10 gal/d | 1,577.25491 mL/h |
| 60 gal/d | 9,463.52946 mL/h |
| 100 gal/d | 15,772.5491 mL/h |
| 1,000 gal/d | 157,725.491 mL/h |
Reverse conversion: Milliliter per Hours to Gallon per Days
157.725491 mL/h × 0.006340129257 = 1 gal/d
157.725491 milliliter per hours = 1 gallon per days.
gallon per days = milliliter per hours × 0.0063401292566
For a page dedicated to this direction, see Milliliter per Hours to Gallon per Days.
Understanding the Gallon per Days (gal/d)
Volumetric flow rate.
Understanding the Milliliter per Hours (mL/h)
Volumetric flow rate.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many milliliter per hours are in 1 gallon per days?
1 gallon per days equals 157.725491 milliliter per hours, using the exact defined conversion factor rather than an estimate.
How do I convert gallon per days to milliliter per hours?
Multiply the gallon per days value by 157.725491. The converter above does this instantly to whatever precision you set.
How do I convert milliliter per hours back to gallon per days?
Use the reverse factor: 1 milliliter per hours equals 0.0063401293 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 milliliter per hours?
Milliliter per Hours (mL/h) is a unit of flow rate.
Is the gallon per days to milliliter per hours conversion exact?
Yes. Both gallon per days and milliliter per hours are defined by fixed standards rather than physical artifacts, so the factor of 157.725491 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.