1. What is a US GPM to m3/hr Calculator?

Definition: This calculator converts flow rate from US gallons per minute (GPM) to cubic meters per hour (m³/h).

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

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( Q_{m³/h} \) — Flow rate in cubic meters per hour
• \( Q_{gpm} \) — Flow rate in US gallons per minute

Explanation: The conversion factor 4.402 comes from the relationship between gallons and cubic meters (1 m³/h = 4.402 GPM).

3. Importance of Flow Rate Conversion

Details: Accurate unit conversion ensures proper system design, pump sizing, and compliance with international standards that often use metric units.

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

Q1: What is GPM?
A: GPM stands for gallons per minute, a common US unit for measuring flow rate of liquids.

Q2: Why convert to m³/h?
A: Cubic meters per hour is the standard metric unit for flow rate used in most countries outside the US.

Q3: Is this for US gallons or imperial gallons?
A: This calculator uses US gallons (1 US gallon = 3.785 liters). Imperial gallons are about 20% larger.

Q4: How precise is this conversion?
A: The conversion factor (4.402) provides accuracy to within 0.01% for most practical applications.

Q5: Can I convert m³/h back to GPM?
A: Yes, simply multiply m³/h by 4.402 to get GPM.