1. What is GPM?

GPM stands for gallons per minute, a unit of measurement for water flow rate. It's commonly used to measure the performance of water pumps and plumbing systems.

2. How Does the Calculator Work?

The calculator uses the GPM formula:

Where:

• \( GPM \) — Gallons per minute
• \( Q \) — Flow rate in cubic meters per second (m³/s)
• 15850.32 — Conversion factor from m³/s to GPM

Explanation: The formula converts flow rate from metric units (m³/s) to US customary units (gallons per minute).

3. Importance of GPM Calculation

Details: Calculating GPM is essential for designing plumbing systems, selecting appropriate pumps, and ensuring adequate water supply for various applications.

4. Using the Calculator

Tips: Enter the flow rate in cubic meters per second (m³/s). The value must be greater than 0.

5. Frequently Asked Questions (FAQ)

Q1: Why convert from m³/s to GPM?
A: While metric units are standard in engineering, GPM is commonly used in the US for practical measurements of water flow.

Q2: What are typical GPM values for household water systems?
A: Most household fixtures require 1-5 GPM, while whole-house systems may need 10-20 GPM depending on the number of fixtures.

Q3: How does GPM relate to water pressure?
A: GPM and pressure are related through the system's hydraulic characteristics - higher pressure can deliver more GPM through the same pipe.

Q4: Can I use this for other liquids besides water?
A: The conversion factor is specific to water. Other liquids would require adjusting for their specific gravity.

Q5: What's the difference between GPM and GPH?
A: GPM is gallons per minute while GPH is gallons per hour (1 GPM = 60 GPH).