Volumetric flow rate.
Gallon per Days to Cubic Millimeters per Millisecond Converter — gal/d to mm3/ms
Convert Gallon per Days (gal/d) to Cubic Millimeter per Millisecond (mm3/ms) using the exact conversion factor (1 gallon per days = 0.0438126364 cubic millimeter per millisecond). See the formula, worked examples, and conversion table.
Gallon per Days to Cubic Millimeters per Millisecond 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 / 1e-6.
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 Cubic Millimeters per Millisecond
Gallon per Days and Cubic Millimeter per Millisecond 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 millimeters per millisecond = gallon per days × 0.0438126363889
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 cubic millimeter per millisecond equals 0.000001 base units, so dividing one by the other gives the direct gallon per days-to-cubic millimeter per millisecond factor of 0.0438126363889.
Simple example
1 gal/d × 0.04381263639 = 0.0438126364 mm3/ms
1 gallon per days = 0.0438126364 cubic millimeters per millisecond.
Real-world example
60 gal/d × 0.04381263639 = 2.628758183 mm3/ms
60 gallon per days = 2.628758183 cubic millimeters per millisecond.
Conversion table
| Gallon per Days (gal/d) | Cubic Millimeter per Millisecond (mm3/ms) |
|---|---|
| 0.1 gal/d | 0.0043812636 mm3/ms |
| 1 gal/d | 0.0438126364 mm3/ms |
| 10 gal/d | 0.4381263639 mm3/ms |
| 60 gal/d | 2.628758183 mm3/ms |
| 100 gal/d | 4.381263639 mm3/ms |
| 1,000 gal/d | 43.81263639 mm3/ms |
Reverse conversion: Cubic Millimeter per Millisecond to Gallon per Days
0.0438126364 mm3/ms × 22.82446532 = 1 gal/d
0.0438126364 cubic millimeters per millisecond = 1 gallon per days.
gallon per days = cubic millimeters per millisecond × 22.8244653237
For a page dedicated to this direction, see Cubic Millimeter per Millisecond to Gallon per Days.
Understanding the Gallon per Days (gal/d)
Volumetric flow rate.
Understanding the Cubic Millimeter per Millisecond (mm3/ms)
Volumetric flow rate.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many cubic millimeters per millisecond are in 1 gallon per days?
1 gallon per days equals 0.0438126364 cubic millimeters per millisecond, using the exact defined conversion factor rather than an estimate.
How do I convert gallon per days to cubic millimeter per millisecond?
Multiply the gallon per days value by 0.04381263639. The converter above does this instantly to whatever precision you set.
How do I convert cubic millimeter per millisecond back to gallon per days?
Use the reverse factor: 1 cubic millimeter per millisecond equals 22.82446532 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 cubic millimeter per millisecond?
Cubic Millimeter per Millisecond (mm3/ms) is a unit of flow rate.
Is the gallon per days to cubic millimeter per millisecond conversion exact?
Yes. Both gallon per days and cubic millimeter per millisecond are defined by fixed standards rather than physical artifacts, so the factor of 0.04381263639 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.