Volumetric Flow Rate
gal/day (US)toL/s
Convert US gallons per day (gal/day (US)) to litres per second (L/s).
Factor1 gal/day (US) = 4.381264e-5 L/s
Converter
gal/day (US)
Accepts numbers or expressions, e.g. 150 + 14.7
Result
L/s
Rendered to 6 significant figures.
Formula
Formula
L/s = gal/day (US) × 4.381264e-5
Multiply any value in US gallons per day by 4.381264e-5 to obtain the value in litres per second.
Worked example
Convert 10000 gal/day (US) to L/s.
- 01Start with 10000 gal/day (US).
- 02Multiply by the conversion factor: 10000 × 4.381264e-5 = 0.438126 L/s.
Result10000 gal/day (US) = 0.438126 L/s
Conversion table
| gal/day (US) | L/s |
|---|---|
| 1 | 4.3813e-5 |
| 2 | 8.7625e-5 |
| 5 | 0.00021906 |
| 10 | 0.00043813 |
| 20 | 0.00087625 |
| 50 | 0.0021906 |
| 100 | 0.0043813 |
| 200 | 0.0087625 |
| 500 | 0.021906 |
| 1000 | 0.043813 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from gal/day (US) to L/s?
1 gal/day (US) equals 4.381264e-5 L/s. To convert, multiply the value in US gallons per day by 4.381264e-5.
How do I convert 1 gal/day (US) to L/s?
1 gal/day (US) = 4.38126e-5 L/s. For any value, multiply by 4.381264e-5.
How do I convert L/s back to gal/day (US)?
Divide by the same factor — or equivalently, multiply by 22824.47. So 1 L/s = 22824.5 gal/day (US).
When would I need to convert US gallon per day to litre per second?
Flow-rate conversions show up in pump curve interpretation, control valve sizing (Cv vs Kv), and aligning vendor specifications with process simulation outputs. gal/day (US) to L/s is a frequently needed conversion for hydraulic sizing.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).