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

To convert Litres per hour to Gallons per hour, we use a standard conversion factor. Here's how to do it:

Conversion Fundamentals

The key to converting between Litres per hour (L/h) and Gallons per hour (gal/h) is understanding the relationship between Litres and Gallons

$$1 \text{ Litre } \approx 0.264172 \text{ US Gallons}$$

Converting Litres per Hour to Gallons per Hour

To convert from L/h to gal/h, multiply the number of Litres per hour by the conversion factor.

$$\text{Gallons per Hour} = \text{Litres per Hour} \times 0.264172$$

Example: Converting 1 L/h to gal/h

$$1 \text{ L/h} \times 0.264172 = 0.264172 \text{ gal/h}$$

Therefore, 1 Litre per hour is approximately 0.264172 US Gallons per hour.

Converting Gallons per Hour to Litres per Hour

To convert from gal/h to L/h, divide the number of Gallons per hour by the conversion factor.

$$\text{Litres per Hour} = \frac{\text{Gallons per Hour}}{0.264172}$$

Alternatively, you can multiply by the inverse of the conversion factor, which is approximately 3.78541.

$$\text{Litres per Hour} = \text{Gallons per Hour} \times 3.78541$$

Example: Converting 1 gal/h to L/h

$$1 \text{ gal/h} \times 3.78541 = 3.78541 \text{ L/h}$$

Therefore, 1 US Gallon per hour is approximately 3.78541 Litres per hour.

Real-World Examples

1. Measuring fuel consumption: Fuel consumption rates in vehicles or machinery are often measured in Litres per hour or Gallons per hour. For instance, the fuel consumption of a generator or a large engine might be specified in these units.

2. Industrial Processes: Chemical plants and manufacturing facilities often deal with flow rates in these units when mixing or processing liquids. For example, dosing a chemical into a process stream.

3. Water Flow: Measuring the flow rate of water pumps or irrigation systems.

Interesting Facts

• Archimedes' Principle: While not directly related to the modern units, Archimedes was one of the first to quantify volume and displacement, laying the foundation for understanding fluid dynamics and flow rates. His principle states that the buoyant force on an object submerged in a fluid is equal to the weight of the fluid that the object displaces.
• The conversion factor between litres and gallons is defined based on the definition of both units. The litre is defined as a specific volume in the metric system, while the gallon has different definitions (US and imperial). The US gallon is defined as 231 cubic inches. NIST is an authority on definition of such measurements.

How to Convert Litres per hour to Gallons per hour

To convert Litres per hour to Gallons per hour, multiply the flow rate by the conversion factor between $l/h$ and $gal/h$. Here is the step-by-step process for converting $25\ l/h$.

1. Write the conversion factor:
   Use the verified relationship between the two units:

   $$1\ l/h = 0.2641720523438\ gal/h$$

2. Set up the conversion formula:
   Multiply the given value in Litres per hour by the conversion factor:

   $$\text{Gallons per hour} = \text{Litres per hour} \times 0.2641720523438$$

3. Substitute the input value:
   Insert $25$ for the Litres per hour value:

   $$25 \times 0.2641720523438$$

4. Calculate the result:
   Perform the multiplication:

   $$25 \times 0.2641720523438 = 6.6043013085938$$

5. Result:

   $$25\ l/h = 6.6043013085938\ gal/h$$

A practical tip: when converting volume flow rates, make sure both the volume unit and the time unit match the conversion factor. Since both units here are “per hour,” only the volume conversion is needed.

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

To convert Litres per hour to Gallons per hour, multiply the flow rate in litres per hour by the factor $0.2641720523438$. The formula is $\text{gal/h} = \text{l/h} \times 0.2641720523438$.

How many Gallons per hour are in 1 Litre per hour?

There are exactly $0.2641720523438$ Gallons per hour in $1$ Litre per hour. This value uses the conversion factor for l/h to gal/h.

Why would I convert Litres per hour to Gallons per hour?

This conversion is useful when comparing pump, fuel, irrigation, or filtration flow rates across systems that use different measurement units. It helps when equipment specifications are listed in litres per hour but your application or region uses gallons per hour.

How do I convert a larger flow rate from l/h to gal/h?

Use the same formula for any value: multiply the number of litres per hour by $0.2641720523438$. For example, if a device is rated in l/h, applying this factor gives the equivalent flow in gal/h.

Is the l/h to gal/h conversion factor always the same?

Yes, the conversion factor remains constant: $1\ \text{l/h} = 0.2641720523438\ \text{gal/h}$. It does not change based on the liquid, as long as you are only converting units of volumetric flow rate.

When is this conversion commonly used in real-world situations?

It is commonly used for water pumps, fuel consumption systems, chemical dosing equipment, and aquarium or pool filtration setups. Converting from l/h to gal/h makes it easier to match equipment ratings, operating requirements, and manufacturer specifications.