Convert LPM to GPM Calculator

Conversion Formula:

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

Flow Rate (GPM):

Unit Converter ▲

Unit Converter ▼

From:	To:

1. What is a LPM to GPM Converter?

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

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

2. How Does the Calculator Work?

The calculator uses the formula:

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

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, dividing LPM by this value gives the equivalent flow rate in GPM.

3. Importance of Flow Rate Conversion

Details: Accurate conversion between units is crucial when working with equipment specifications, system designs, or international standards that use different measurement systems.

4. Using the Calculator

Tips: Simply enter the flow rate in liters per minute (LPM). The value must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why is the conversion factor 3.785?
A: This is the exact conversion between liters and US gallons (1 US gallon = 3.785411784 liters).

Q2: Does this work for imperial gallons?
A: No, this calculator uses US gallons. For imperial gallons (UK), use 4.546 as the conversion factor.

Q3: What's a typical flow rate in LPM/GPM?
A: Household faucets typically flow at 4-8 LPM (1-2 GPM), while shower heads might be 6-12 LPM (1.5-3 GPM).

Q4: How precise is this conversion?
A: The conversion is mathematically exact using the standard conversion factor of 3.785.

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