Volumetric flow rate.
Liter per Days to Gallons per Millisecond Converter — L/d to gal/ms
Convert Liter per Days (L/d) to Gallon per Millisecond (gal/ms) using the exact conversion factor (1 liter per days = 3.057547e-9 gallon per millisecond). See the formula, worked examples, and conversion table.
Liter 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 1.15740741e-8 / 3.785411784.
Flow rate uses cubic meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Liter per Days to Gallons per Millisecond
Liter 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 = liter per days × 3.057547e-9
This factor comes from each unit's defined relationship to the category's base unit: 1 liter per days equals 1.157407e-8 base units, and 1 gallon per millisecond equals 3.785411784 base units, so dividing one by the other gives the direct liter per days-to-gallon per millisecond factor of 3.057547e-9.
Simple example
1 L/d × 3.057547e-9 = 3.057547e-9 gal/ms
1 liter per days = 3.057547e-9 gallons per millisecond.
Real-world example
60 L/d × 3.057547e-9 = 1.834528e-7 gal/ms
60 liter per days = 1.834528e-7 gallons per millisecond.
Conversion table
| Liter per Days (L/d) | Gallon per Millisecond (gal/ms) |
|---|---|
| 0.1 L/d | 3.057547e-10 gal/ms |
| 1 L/d | 3.057547e-9 gal/ms |
| 10 L/d | 3.057547e-8 gal/ms |
| 60 L/d | 1.834528e-7 gal/ms |
| 100 L/d | 3.057547e-7 gal/ms |
| 1,000 L/d | 0.0000030575 gal/ms |
Reverse conversion: Gallon per Millisecond to Liter per Days
3.057547e-9 gal/ms × 327059578.1 = 1.000000032 L/d
3.057547e-9 gallons per millisecond = 1.000000032 liter per days.
liter per days = gallons per millisecond × 327059578.138
For a page dedicated to this direction, see Gallon per Millisecond to Liter per Days.
Understanding the Liter per Days (L/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 liter per days?
1 liter per days equals 3.057547e-9 gallons per millisecond, using the exact defined conversion factor rather than an estimate.
How do I convert liter per days to gallon per millisecond?
Multiply the liter per days value by 3.057547e-9. The converter above does this instantly to whatever precision you set.
How do I convert gallon per millisecond back to liter per days?
Use the reverse factor: 1 gallon per millisecond equals 327,059,578.1 liter per days. You can also use the swap control in the converter above to flip the direction instantly.
What is a liter per days?
Liter per Days (L/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 liter per days to gallon per millisecond conversion exact?
Yes. Both liter per days and gallon per millisecond are defined by fixed standards rather than physical artifacts, so the factor of 3.057547e-9 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.