GPM to LPM Conversion

Conversion Formula:

\[ Q_{lpm} = Q_{gpm} \times 3.785 \]

Flow Rate (LPM):

Unit Converter ▲

Unit Converter ▼

From:	To:

1. What is GPM to LPM Conversion?

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

Purpose: It helps engineers, technicians, and professionals working with fluid systems to convert between imperial and metric flow rate units.

2. How Does the Conversion Work?

The conversion uses the formula:

\[ Q_{lpm} = Q_{gpm} \times 3.785 \]

Where:

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

Explanation: Since 1 US gallon equals exactly 3.78541 liters, we multiply the GPM value by this factor to get LPM.

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) and the calculator will automatically compute the equivalent in liters per minute (LPM).

5. Frequently Asked Questions (FAQ)

Q1: What's the exact conversion factor?
A: The exact conversion is 3.78541 liters per US gallon, though 3.785 is typically precise enough for most applications.

Q2: Does this work for imperial (UK) gallons?
A: No, this uses US gallons. For UK gallons, use 4.54609 as the conversion factor.

Q3: When would I need this conversion?
A: When working with international equipment specifications, metric system requirements, or comparing data from different sources.

Q4: How precise is this conversion?
A: The calculator shows 3 decimal places, which is sufficient for most engineering applications.

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