1. What is a USGPM to LPM Calculator?

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

Purpose: It helps engineers, plumbers, and technicians working with fluid systems to convert between these common flow rate units.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( Q_{lpm} \) — Flow rate in liters per minute
• \( Q_{gpm} \) — Flow rate in US gallons per minute
• 3.785 — Conversion factor (1 US gallon = 3.785 liters)

Explanation: The US gallons per minute value is multiplied by 3.785 to get the equivalent flow rate in liters per minute.

3. Importance of Flow Rate Conversion

Details: Accurate flow rate conversion is essential for system design, pump selection, and compliance with specifications that may use different unit systems.

4. Using the Calculator

Tips: Simply enter the flow rate in US gallons per minute (must be > 0) and the calculator will provide the equivalent in liters per minute.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between US gallon and imperial gallon?
A: A US gallon is 3.785 liters, while an imperial gallon is 4.546 liters. This calculator uses US gallons.

Q2: Why is flow rate conversion important?
A: Different countries and industries use different measurement systems, so conversion ensures accurate communication and system compatibility.

Q3: Can I convert LPM back to GPM with this?
A: No, this is a one-way conversion. For reverse conversion, you would divide by 3.785 instead of multiplying.

Q4: Is this conversion exact?
A: Yes, the conversion factor 3.785 is exact by definition of the US gallon.

Q5: What typical applications use this conversion?
A: Water treatment systems, hydraulic systems, irrigation, and any fluid system where flow rates need to be specified in different units.