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Volumetric Flow Rate

gal/day (US)toL/hr

Convert US gallons per day (gal/day (US)) to litres per hour (L/hr).

Factor1 gal/day (US) = 0.1577255 L/hr

Converter

gal/day (US)

Accepts numbers or expressions, e.g. 150 + 14.7

Result
1577.25L/hr

Rendered to 6 significant figures.

Formula

Formula
L/hr = gal/day (US) × 0.1577255

Multiply any value in US gallons per day by 0.1577255 to obtain the value in litres per hour.

Worked example

Convert 10000 gal/day (US) to L/hr.

  1. 01Start with 10000 gal/day (US).
  2. 02Multiply by the conversion factor: 10000 × 0.1577255 = 1577.25 L/hr.
Result10000 gal/day (US) = 1577.25 L/hr

Conversion table

gal/day (US)L/hr
10.15773
20.31545
50.78863
101.5773
203.1545
507.8863
10015.773
20031.545
50078.863
1000157.73

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from gal/day (US) to L/hr?
1 gal/day (US) equals 0.1577255 L/hr. To convert, multiply the value in US gallons per day by 0.1577255.
How do I convert 1 gal/day (US) to L/hr?
1 gal/day (US) = 0.157725 L/hr. For any value, multiply by 0.1577255.
How do I convert L/hr back to gal/day (US)?
Divide by the same factor — or equivalently, multiply by 6.340129. So 1 L/hr = 6.34013 gal/day (US).
When would I need to convert US gallon per day to litre per hour?
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/hr is a frequently needed conversion for flow datasheet preparation.
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).

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