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 different flow rate units used in various systems and countries.

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 (cubic meters to gallons) and time (hours to minutes) conversions.

3. Importance of Flow Rate Conversion

Details: Proper unit conversion ensures accurate system design, pump selection, and performance calculations in hydraulic systems.

4. Using the Calculator

Tips: Simply enter the flow rate in m³/h. The value must be > 0. The calculator will automatically provide the equivalent in GPM.

5. Frequently Asked Questions (FAQ)

Q1: Why convert between m³/h and GPM?
A: Different industries and countries use different units. Conversion is needed when working with international specifications or equipment.

Q2: How accurate is the conversion factor?
A: The factor 4.402 is precise to 4 significant figures (1 m³ = 264.172 gallons, 1 hour = 60 minutes).

Q3: When would I need this conversion?
A: When selecting pumps, designing piping systems, or interpreting flow meter readings that use different units.

Q4: Can I convert GPM back to m³/h?
A: Yes, divide GPM by 4.402 or use our GPM to m³/h calculator.

Q5: Does this work for any liquid?
A: Yes, the conversion is based on volume flow rate, independent of liquid type (assuming incompressible flow).