1. What is LPM to GPM Conversion?

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

Purpose: It helps engineers, plumbers, and technicians work with flow rate measurements in different unit systems.

2. How Does the Conversion Work?

The calculator uses the formula:

Where:

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

Explanation: Since 1 gallon equals approximately 3.785 liters, we divide the LPM value by 3.785 to get GPM.

3. Importance of Flow Rate Conversion

Details: Accurate conversion between measurement systems is crucial for international projects, equipment specifications, and system design.

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

Q1: Why convert between LPM and GPM?
A: Different countries use different measurement systems, and equipment specs may use either unit.

Q2: Is 3.785 the exact conversion factor?
A: Yes, 1 US gallon = exactly 3.785411784 liters, though we use 3.785 for practical calculations.

Q3: What's a typical flow rate in LPM?
A: Household faucets typically flow at 4-8 LPM, while shower heads range from 6-12 LPM.

Q4: How do I convert GPM back to LPM?
A: Multiply GPM by 3.785 to get LPM (opposite of this calculator's function).

Q5: Does this work for other flow rate units?
A: No, this specifically converts between LPM and GPM. Other units require different conversion factors.