Volumetric flow rate.
Cubic foot per Days to Gallons per Millisecond Converter — ft3/d to gal/ms
Convert Cubic foot per Days (ft3/d) to Gallon per Millisecond (gal/ms) using the exact conversion factor (1 cubic foot per days = 8.658009e-8 gallon per millisecond). See the formula, worked examples, and conversion table.
Cubic foot per Days to Gallons 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 3.2774128e-7 / 3.785411784.
Flow rate uses cubic meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Cubic foot per Days to Gallons per Millisecond
Cubic foot per Days and Gallon 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
gallons per millisecond = cubic foot per days × 8.658009e-8
This factor comes from each unit's defined relationship to the category's base unit: 1 cubic foot per days equals 3.277413e-7 base units, and 1 gallon per millisecond equals 3.785411784 base units, so dividing one by the other gives the direct cubic foot per days-to-gallon per millisecond factor of 8.658009e-8.
Simple example
1 ft3/d × 8.658009e-8 = 8.658009e-8 gal/ms
1 cubic foot per days = 8.658009e-8 gallons per millisecond.
Real-world example
60 ft3/d × 8.658009e-8 = 0.0000051948 gal/ms
60 cubic foot per days = 0.0000051948 gallons per millisecond.
Conversion table
| Cubic foot per Days (ft3/d) | Gallon per Millisecond (gal/ms) |
|---|---|
| 0.1 ft3/d | 8.658009e-9 gal/ms |
| 1 ft3/d | 8.658009e-8 gal/ms |
| 10 ft3/d | 8.658009e-7 gal/ms |
| 60 ft3/d | 0.0000051948 gal/ms |
| 100 ft3/d | 0.000008658 gal/ms |
| 1,000 ft3/d | 0.0000865801 gal/ms |
Reverse conversion: Gallon per Millisecond to Cubic foot per Days
8.658009e-8 gal/ms × 11550000 = 1.000000039 ft3/d
8.658009e-8 gallons per millisecond = 1.000000039 cubic foot per days.
cubic foot per days = gallons per millisecond × 11550000
For a page dedicated to this direction, see Gallon per Millisecond to Cubic foot per Days.
Understanding the Cubic foot per Days (ft3/d)
Volumetric flow rate.
Understanding the Gallon per Millisecond (gal/ms)
Volumetric flow rate.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many gallons per millisecond are in 1 cubic foot per days?
1 cubic foot per days equals 8.658009e-8 gallons per millisecond, using the exact defined conversion factor rather than an estimate.
How do I convert cubic foot per days to gallon per millisecond?
Multiply the cubic foot per days value by 8.658009e-8. The converter above does this instantly to whatever precision you set.
How do I convert gallon per millisecond back to cubic foot per days?
Use the reverse factor: 1 gallon per millisecond equals 11,550,000 cubic foot per days. You can also use the swap control in the converter above to flip the direction instantly.
What is a cubic foot per days?
Cubic foot per Days (ft3/d) is a unit of flow rate.
What is a gallon per millisecond?
Gallon per Millisecond (gal/ms) is a unit of flow rate.
Is the cubic foot per days to gallon per millisecond conversion exact?
Yes. Both cubic foot per days and gallon per millisecond are defined by fixed standards rather than physical artifacts, so the factor of 8.658009e-8 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.