Volumetric flow rate.
Gallon per Days to Cubic Meter per Days Converter — gal/d to m3/d
Convert Gallon per Days (gal/d) to Cubic Meter per Days (m3/d) using the exact conversion factor (1 gallon per days = 0.0037854118 cubic meter per days). See the formula, worked examples, and conversion table.
Gallon per Days to Cubic Meter 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 4.38126364e-8 / 1.15740741e-5.
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 Meter per Days
Gallon per Days and Cubic Meter 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
cubic meter per days = gallon per days × 0.003785411784
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 meter per days equals 0.0000115740740741 base units, so dividing one by the other gives the direct gallon per days-to-cubic meter per days factor of 0.003785411784.
Simple example
1 gal/d × 0.003785411784 = 0.0037854118 m3/d
1 gallon per days = 0.0037854118 cubic meter per days.
Real-world example
60 gal/d × 0.003785411784 = 0.227124707 m3/d
60 gallon per days = 0.227124707 cubic meter per days.
Conversion table
| Gallon per Days (gal/d) | Cubic Meter per Days (m3/d) |
|---|---|
| 0.1 gal/d | 0.0003785412 m3/d |
| 1 gal/d | 0.0037854118 m3/d |
| 10 gal/d | 0.0378541178 m3/d |
| 60 gal/d | 0.227124707 m3/d |
| 100 gal/d | 0.3785411784 m3/d |
| 1,000 gal/d | 3.785411784 m3/d |
Reverse conversion: Cubic Meter per Days to Gallon per Days
0.0037854118 m3/d × 264.1720524 = 1.000000004 gal/d
0.0037854118 cubic meter per days = 1.000000004 gallon per days.
gallon per days = cubic meter per days × 264.172052358
For a page dedicated to this direction, see Cubic Meter per Days to Gallon per Days.
Understanding the Gallon per Days (gal/d)
Volumetric flow rate.
Understanding the Cubic Meter per Days (m3/d)
Volumetric flow rate.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many cubic meter per days are in 1 gallon per days?
1 gallon per days equals 0.0037854118 cubic meter per days, using the exact defined conversion factor rather than an estimate.
How do I convert gallon per days to cubic meter per days?
Multiply the gallon per days value by 0.003785411784. The converter above does this instantly to whatever precision you set.
How do I convert cubic meter per days back to gallon per days?
Use the reverse factor: 1 cubic meter per days equals 264.1720524 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 meter per days?
Cubic Meter per Days (m3/d) is a unit of flow rate.
Is the gallon per days to cubic meter per days conversion exact?
Yes. Both gallon per days and cubic meter per days are defined by fixed standards rather than physical artifacts, so the factor of 0.003785411784 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.