1. What is Flow Rate Conversion?

Flow rate conversion between cubic meters per hour (m³/h) and gallons per minute (GPM) is essential for engineers, technicians, and professionals working with fluid systems across different measurement standards.

2. How Does the Conversion Work?

The conversion formula is:

Where:

• \( m³/h \) — Flow rate in cubic meters per hour
• \( GPM \) — Flow rate in gallons per minute
• \( 4.402867539302473 \) — Conversion factor

Explanation: This conversion factor accounts for the volume difference between cubic meters and gallons, and the time conversion from hours to minutes.

3. Importance of Flow Rate Conversion

Details: Accurate flow rate conversion is crucial for international projects, equipment specification, system design, and ensuring compatibility between components using different measurement systems.

4. Using the Calculator

Tips: Enter the flow rate in cubic meters per hour (m³/h). The value must be positive. The calculator will instantly convert it to gallons per minute (GPM).

5. Frequently Asked Questions (FAQ)

Q1: Why is the conversion factor 4.402867539302473?
A: This factor comes from 1 cubic meter = 264.172 gallons and 1 hour = 60 minutes (264.172 ÷ 60 = 4.402867539302473).

Q2: When would I need to convert between m³/h and GPM?
A: Common in plumbing, HVAC, chemical processing, water treatment, and any industry where fluid flow rates need conversion between metric and imperial systems.

Q3: How accurate is this conversion?
A: The conversion is mathematically exact based on standard volume and time unit definitions.

Q4: Can I convert GPM back to m³/h?
A: Yes, use the inverse: m³/h = GPM ÷ 4.402867539302473 or m³/h = GPM × 0.227124.

Q5: Are there different types of gallons that affect conversion?
A: This calculator uses US gallons. For UK imperial gallons, the conversion factor would be different (approximately 3.666).