1. What is m3/h to GPM Conversion?

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

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:

• \( Q_{gpm} \) — Flow rate in gallons per minute (GPM)
• \( Q_{m3h} \) — Flow rate in cubic meters per hour (m³/h)
• 4.402 — Conversion factor (1 m³/h = 4.402 GPM)

Explanation: The conversion factor accounts for both volume (1 m³ = 264.172 gallons) and time (1 hour = 60 minutes).

3. Importance of Flow Rate Conversion

Details: Accurate unit conversion ensures proper system design, pump selection, and process control in fluid systems.

4. Using the Calculator

Tips: Simply enter the flow rate in m³/h to get the equivalent in GPM. The value must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why is the conversion factor 4.402?
A: It combines volume conversion (1 m³ = 264.172 gallons) and time conversion (1 hour = 60 minutes): 264.172/60 ≈ 4.402.

Q2: When would I need this conversion?
A: When working with international specifications, comparing pump ratings, or designing systems that use different unit standards.

Q3: How accurate is this conversion?
A: The conversion is mathematically exact, though practical measurements may have some tolerance.

Q4: Can I convert GPM back to m³/h?
A: Yes, divide GPM by 4.402 to get m³/h (or multiply by 0.227).

Q5: Does this work for all liquids?
A: Yes, as it's a volumetric flow conversion. For mass flow, you'd need density information.