1. What is GPM to L/min Conversion?

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

Purpose: It helps engineers, technicians, and professionals working with fluid systems to convert between imperial and metric 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 gallons per minute
• 3.785 — Conversion factor (1 gallon = 3.785 liters)

Explanation: The conversion is straightforward as it's based on the fixed relationship between gallons and liters.

3. Importance of Flow Rate Conversion

Details: Accurate flow rate conversion is essential for system design, pump sizing, and when working with international specifications or equipment.

4. Using the Calculator

Tips: Simply enter the flow rate in gallons per minute (GPM). The calculator will instantly provide the equivalent in liters per minute (L/min).

5. Frequently Asked Questions (FAQ)

Q1: Why is the conversion factor 3.785?
A: 1 US gallon is exactly equal to 3.785411784 liters. We use 3.785 for practical calculations.

Q2: Does this work for both US and UK gallons?
A: No, this calculator uses US gallons (1 US gal = 3.785 L). UK gallons are different (1 UK gal = 4.546 L).

Q3: What's a typical GPM value for household water?
A: Standard household faucets typically deliver 1-2 GPM (3.8-7.6 L/min), while showerheads are about 2.5 GPM (9.5 L/min).

Q4: How precise is this conversion?
A: The conversion is mathematically exact based on the defined relationship between gallons and liters.

Q5: Can I convert L/min back to GPM?
A: Yes, simply divide the L/min value by 3.785 to get GPM.