1. What is GPM to m³/h Converter?

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

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

2. How Does the Converter Work?

The converter uses the formula:

Where:

• \( Q_{m³/h} \) — Flow rate in cubic meters per hour
• \( Q_{gpm} \) — Flow rate in gallons per minute
• 4.402 — Conversion factor (1 m³/h = 4.402 GPM)

Explanation: The GPM value is divided by 4.402 to convert to m³/h, as 1 cubic meter equals approximately 264.172 gallons and 1 hour equals 60 minutes.

3. Importance of Flow Rate Conversion

Details: Accurate flow rate conversion is essential for system design, pump sizing, and process control in international projects where different unit systems are used.

4. Using the Converter

Tips: Simply enter the flow rate in GPM and the calculator will automatically compute the equivalent in m³/h.

5. Frequently Asked Questions (FAQ)

Q1: Why is the conversion factor 4.402?
A: It's derived from the relationship between gallons and cubic meters (1 m³ = 264.172 gal) and minutes to hours (1 h = 60 min): 264.172/60 ≈ 4.402.

Q2: What's a typical GPM value for household plumbing?
A: Standard faucets typically flow at 1-2 GPM (0.23-0.45 m³/h), while showerheads are about 2.5 GPM (0.57 m³/h).

Q3: When would I need this conversion?
A: When working with international specifications, pump curves, or comparing systems using different measurement units.

Q4: How accurate is this conversion?
A: The conversion is mathematically exact, but always consider significant figures based on your measurement precision.

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