Convert GPH to LPM

Conversion Formula:

\[ Q_{lpm} = \frac{Q_{gph}}{60} \times 3.785 \]

Flow Rate (LPM):

Unit Converter ▲

Unit Converter ▼

From:	To:

1. What is GPH to LPM Conversion?

Definition: This calculator converts flow rate from gallons per hour (GPH) to liters per minute (LPM).

Purpose: It helps in fluid dynamics calculations, especially in plumbing, irrigation, and industrial applications where different flow rate units are used.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ Q_{lpm} = \frac{Q_{gph}}{60} \times 3.785 \]

Where:

\( Q_{lpm} \) — Flow rate in liters per minute
\( Q_{gph} \) — Flow rate in gallons per hour

Explanation: First converts hours to minutes (÷60) then gallons to liters (×3.785).

3. Importance of Flow Rate Conversion

Details: Accurate conversion ensures proper system design, equipment selection, and process control in international projects where different measurement systems are used.

4. Using the Calculator

Tips: Simply enter the flow rate in gallons per hour (GPH). The value must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why convert between GPH and LPM?
A: Different industries and countries use different units, and conversion is often needed for equipment specifications and system design.

Q2: What's the conversion factor from gallons to liters?
A: 1 US gallon = 3.785 liters exactly.

Q3: How accurate is this conversion?
A: The conversion is mathematically exact, assuming US gallons are used.

Q4: When would I need this conversion?
A: Common in water treatment, chemical processing, fuel systems, and any application involving liquid flow measurements.

Q5: Can I convert LPM back to GPH?
A: Yes, by using the inverse formula: \( Q_{gph} = Q_{lpm} \times 60 \div 3.785 \)