Volumetric flow rate.
Cubic Millimeter per Hours to Gallon per Days Converter — mm3/h to gal/d
Convert Cubic Millimeter per Hours (mm3/h) to Gallon per Days (gal/d) using the exact conversion factor (1 cubic millimeter per hours = 0.0000063401 gallon per days). See the formula, worked examples, and conversion table.
Cubic Millimeter per Hours to Gallon 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 2.77777778e-13 / 4.38126364e-8.
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 Gallon per Days
Cubic Millimeter per Hours and Gallon 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
gallon per days = cubic millimeter per hours × 0.0000063401292566
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 gallon per days equals 4.381264e-8 base units, so dividing one by the other gives the direct cubic millimeter per hours-to-gallon per days factor of 0.0000063401292566.
Simple example
1 mm3/h × 0.000006340129257 = 0.0000063401 gal/d
1 cubic millimeter per hours = 0.0000063401 gallon per days.
Real-world example
60 mm3/h × 0.000006340129257 = 0.0003804078 gal/d
60 cubic millimeter per hours = 0.0003804078 gallon per days.
Conversion table
| Cubic Millimeter per Hours (mm3/h) | Gallon per Days (gal/d) |
|---|---|
| 0.1 mm3/h | 6.340129e-7 gal/d |
| 1 mm3/h | 0.0000063401 gal/d |
| 10 mm3/h | 0.0000634013 gal/d |
| 60 mm3/h | 0.0003804078 gal/d |
| 100 mm3/h | 0.0006340129 gal/d |
| 1,000 mm3/h | 0.0063401293 gal/d |
Reverse conversion: Gallon per Days to Cubic Millimeter per Hours
0.0000063401 gal/d × 157725.491 = 0.9999953855 mm3/h
0.0000063401 gallon per days = 0.9999953855 cubic millimeter per hours.
cubic millimeter per hours = gallon per days × 157725.491
For a page dedicated to this direction, see Gallon per Days to Cubic Millimeter per Hours.
Understanding the Cubic Millimeter per Hours (mm3/h)
Volumetric flow rate.
Understanding the Gallon per Days (gal/d)
Volumetric flow rate.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many gallon per days are in 1 cubic millimeter per hours?
1 cubic millimeter per hours equals 0.0000063401 gallon per days, using the exact defined conversion factor rather than an estimate.
How do I convert cubic millimeter per hours to gallon per days?
Multiply the cubic millimeter per hours value by 0.000006340129257. The converter above does this instantly to whatever precision you set.
How do I convert gallon per days back to cubic millimeter per hours?
Use the reverse factor: 1 gallon per days equals 157,725.491 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 gallon per days?
Gallon per Days (gal/d) is a unit of flow rate.
Is the cubic millimeter per hours to gallon per days conversion exact?
Yes. Both cubic millimeter per hours and gallon per days are defined by fixed standards rather than physical artifacts, so the factor of 0.000006340129257 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.