Gallons per second (gal/s) to Litres per hour (l/h) conversion

Understanding Gallons per second to Litres per hour Conversion

Gallons per second ($gal/s$) and litres per hour ($l/h$) are both units used to measure volumetric flow rate, which describes how much liquid passes through a system over time. Gallons per second is often used for high-flow systems, while litres per hour is common for slower continuous processes, dosing systems, filtration equipment, and laboratory applications.

Converting from $gal/s$ to $l/h$ is useful when comparing equipment specifications, interpreting international technical documents, or moving between U.S.-customary and metric measurement systems. It also helps standardize flow values across engineering, industrial, agricultural, and water-management contexts.

Conversion Formula

The conversion factor is:

$$1 \, gal/s = 13627.482423143 \, l/h$$

To convert gallons per second to litres per hour, multiply the flow rate in gallons per second by $13627.482423143$:

$$l/h = gal/s \times 13627.482423143$$

For reference, the inverse conversion is:

$$1 \, l/h = 0.00007338112565104 \, gal/s$$

Step-by-Step Example

Suppose a pumping system delivers $2.75 \, gal/s$.

Write the formula:

$$l/h = gal/s \times 13627.482423143$$

Substitute the given value:

$$l/h = 2.75 \times 13627.482423143$$

Calculate:

$$l/h = 37475.576663643 \, l/h$$

So, a flow rate of $2.75 \, gal/s$ equals $37475.576663643 \, l/h$.

Real-World Examples

• A municipal water transfer pump moving $1.2 \, gal/s$ corresponds to $16352.9789077716 \, l/h$, a useful figure when comparing U.S. pump data with metric pipeline documentation.
• An industrial cooling loop rated at $4.5 \, gal/s$ converts to $61323.6709041435 \, l/h$, showing the large hourly liquid volume involved in thermal control systems.
• A firefighting water supply line delivering $0.85 \, gal/s$ equals $11583.3600596715 \, l/h$, which can help when aligning equipment specifications from different countries.
• A process plant feed stream running at $6.25 \, gal/s$ converts to $85171.7651446438 \, l/h$, useful for hourly production and storage planning.

Interesting Facts

• The litre is a metric unit of volume widely accepted for use with the International System of Units, even though the SI base unit for volume is the cubic metre. Background on the litre is available from NIST: https://www.nist.gov/pml/owm/metric-si/si-units
• The gallon has different definitions in different measurement systems, such as the U.S. gallon and the imperial gallon, so conversion results depend on which gallon is intended. General background is available on Wikipedia: https://en.wikipedia.org/wiki/Gallon

Summary

Gallons per second and litres per hour both describe the same physical quantity: volume flow rate. Using the factor,

$$1 \, gal/s = 13627.482423143 \, l/h$$

the conversion is performed by multiplying the value in $gal/s$ by $13627.482423143$.

This conversion is especially relevant in fluid handling, pumping, water systems, industrial processing, and technical specification matching. The inverse relationship,

$$1 \, l/h = 0.00007338112565104 \, gal/s$$

is helpful when converting metric hourly flow rates back into gallons per second.

How to Convert Gallons per second to Litres per hour

To convert Gallons per second (gal/s) to Litres per hour (l/h), multiply the flow rate by the conversion factor between these two units. Here is the step-by-step method for converting 25 gal/s.

1. Write the conversion factor:
   Use the factor for this volume flow rate conversion:

   $$1 \text{ gal/s} = 13627.482423143 \text{ l/h}$$

2. Set up the conversion formula:
   Multiply the given value in Gallons per second by the conversion factor:

   $$\text{Litres per hour} = \text{Gallons per second} \times 13627.482423143$$

3. Substitute the given value:
   Insert $25$ for the Gallons per second value:

   $$\text{l/h} = 25 \times 13627.482423143$$

4. Calculate the result:
   Perform the multiplication:

   $$25 \times 13627.482423143 = 340687.06057857$$

5. Result:

   $$25 \text{ Gallons per second} = 340687.06057857 \text{ Litres per hour}$$

A practical tip: when converting flow rates, always check the time unit as well as the volume unit. Using a conversion factor helps avoid mistakes in multi-unit conversions.

What is the formula to convert Gallons per second to Litres per hour?

To convert Gallons per second to Litres per hour, multiply the flow rate in gal/s by the factor $13627.482423143$. The formula is $l/h = gal/s \times 13627.482423143$.

How many Litres per hour are in 1 Gallon per second?

There are exactly $13627.482423143$ Litres per hour in $1$ Gallon per second. This value uses the conversion factor for this page.

Why is the conversion factor from Gallons per second to Litres per hour so large?

The number is large because the conversion changes both the volume unit and the time unit at once. Gallons are converted to litres, and seconds are expanded to hours, which greatly increases the hourly value.

Where is converting Gallons per second to Litres per hour used in real life?

This conversion is useful in water treatment, irrigation, pump sizing, and industrial flow monitoring. Engineers and technicians may measure instantaneous flow in gal/s but report system capacity in $l/h$ for planning and equipment specifications.

Can I convert decimal Gallons per second values to Litres per hour?

Yes, the same formula works for whole numbers and decimals. For example, you simply multiply any decimal gal/s value by $13627.482423143$ to get the equivalent flow in $l/h$.

Is Gallons per second a metric unit?

No, Gallons per second is not a metric unit, while Litres per hour is based on the metric litre. Converting between them helps standardize flow rates when working across different measurement systems.