1. What is GPM Flow Calculation?

Definition: This calculator converts flow rate from cubic meters per second (m³/s) to gallons per minute (gpm).

Purpose: It helps engineers, plumbers, and fluid system designers convert between metric and imperial flow rate units.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( Q_{gpm} \) — Flow rate in gallons per minute (gpm)
• \( Q \) — Flow rate in cubic meters per second (m³/s)
• 15850.3 — Conversion factor from m³/s to gpm

Explanation: The conversion factor accounts for both volume (cubic meters to gallons) and time (seconds to minutes) conversions.

3. Importance of Flow Rate Conversion

Details: Accurate flow rate conversion is essential for system design, pump selection, and compliance with specifications that may use different unit systems.

4. Using the Calculator

Tips: Enter the flow rate in cubic meters per second (m³/s). The value must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why is the conversion factor 15850.3?
A: It combines 264.172 (gallons per cubic meter) and 60 (seconds per minute): 264.172 × 60 = 15850.32

Q2: What's a typical flow rate in m³/s?
A: Residential water systems might be 0.0005-0.002 m³/s, while industrial systems could be 0.1 m³/s or more.

Q3: Can I convert gpm back to m³/s?
A: Yes, divide gpm by 15850.3 (or multiply by 0.00006309).

Q4: Why use m³/s instead of L/s?
A: m³/s is the SI base unit, though L/s is more common for smaller flows (1 m³/s = 1000 L/s).

Q5: Does this work for any fluid?
A: Yes, the conversion is volumetric. For mass flow rates, you'd need to consider density.