Convert GPM to m3/s

Conversion Formula:

\[ Q_{m3} = \frac{Q_{gpm} \times 0.003785}{3600} \]

Flow Rate (m³/s):

Unit Converter ▲

Unit Converter ▼

From:	To:

1. What is GPM to m³/s Conversion?

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

Purpose: It helps engineers, plumbers, and technicians working with fluid systems to convert between these common units of flow measurement.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ Q_{m3} = \frac{Q_{gpm} \times 0.003785}{3600} \]

Where:

\( Q_{m3} \) — Flow rate in cubic meters per second (m³/s)
\( Q_{gpm} \) — Flow rate in gallons per minute (GPM)
0.003785 — Conversion factor (1 gallon = 0.003785 cubic meters)
3600 — Seconds per hour (60 seconds × 60 minutes)

Explanation: The formula first converts gallons to cubic meters, then adjusts the time unit from minutes to seconds.

3. Importance of Flow Rate Conversion

Details: Accurate flow rate conversion is essential for system design, pump sizing, and ensuring compatibility between components using different measurement systems.

4. Using the Calculator

Tips: Simply enter the flow rate in gallons per minute (GPM). The value must be greater than 0.

5. Frequently Asked Questions (FAQ)

Q1: Why convert GPM to m³/s?
A: Many engineering calculations and international standards use SI units (m³/s), while GPM is common in US customary systems.

Q2: How precise is this conversion?
A: The conversion is mathematically exact, using standard conversion factors (1 US gallon = 0.003785411784 m³ exactly).

Q3: What's a typical GPM value for household plumbing?
A: Standard faucets flow about 1-2 GPM, showerheads 2.5 GPM, and garden hoses 5-10 GPM.

Q4: Can I convert back from m³/s to GPM?
A: Yes, use the inverse formula: \( Q_{gpm} = \frac{Q_{m3} \times 3600}{0.003785} \)

Q5: Why are the results in scientific notation for small values?
A: The calculator displays very small numbers (typical for m³/s) with sufficient precision.