1. What is GPM to LPS Conversion?

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

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

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( Q_{lps} \) — Flow rate in liters per second (LPS)
• \( Q_{gpm} \) — Flow rate in gallons per minute (GPM)
• 15.850 — Conversion factor (1 GPM = 1/15.850 LPS)

Explanation: The conversion factor accounts for both volume (gallons to liters) and time (minutes to seconds) conversions.

3. Importance of Flow Rate Conversion

Details: Proper unit conversion ensures accurate system design, pump sizing, and fluid dynamics calculations in international projects.

4. Using the Calculator

Tips: Enter the flow rate in GPM (gallons per minute). The value must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why 15.850 as the conversion factor?
A: It combines 3.78541 (liters per gallon) and 60 (seconds per minute): 3.78541 × 60 ≈ 227.1246, then 1/227.1246 ≈ 0.06309 LPS per GPM.

Q2: When would I need to convert GPM to LPS?
A: When working with international standards, metric system requirements, or equipment specifications that use different units.

Q3: How accurate is this conversion?
A: The conversion is mathematically precise, though actual flow rates may vary slightly due to measurement tolerances.

Q4: What's a typical GPM value for household plumbing?
A: Standard faucets flow at 1-2 GPM (0.063-0.126 LPS), while showers typically use 2.5 GPM (0.158 LPS).

Q5: Can I convert LPS back to GPM?
A: Yes, multiply LPS by 15.850 to get GPM (or use our LPS to GPM calculator).