Garden Hose Flow Rate Calculator

Flow Rate Formula:

\[ Q = V \times A \times 448.83 \]

Flow Rate (GPM):

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1. What is a Garden Hose Flow Rate Calculator?

Definition: This calculator estimates the flow rate of water through a garden hose in gallons per minute (GPM) based on water velocity and hose cross-sectional area.

Purpose: It helps gardeners, landscapers, and homeowners determine water flow for irrigation, cleaning, or other water-related tasks.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ Q = V \times A \times 448.83 \]

Where:

\( Q \) — Flow rate (gallons per minute)
\( V \) — Water velocity (feet per second)
\( A \) — Cross-sectional area of hose (square feet)
\( 448.83 \) — Conversion factor (cubic feet to gallons and seconds to minutes)

Explanation: The velocity multiplied by area gives flow in cubic feet per second, which is then converted to gallons per minute.

3. Importance of Flow Rate Calculation

Details: Proper flow rate estimation ensures adequate water supply for irrigation, efficient cleaning, and proper system design.

4. Using the Calculator

Tips: Enter the water velocity in ft/s and hose cross-sectional area in ft². For standard hoses, area can be calculated from diameter (A = π × (diameter/2)²).

5. Frequently Asked Questions (FAQ)

Q1: What's a typical garden hose flow rate?
A: Most standard hoses deliver 5-10 GPM at normal household water pressure.

Q2: How do I measure water velocity?
A: Velocity can be estimated by timing how long it takes to fill a known volume container.

Q3: What affects flow rate in a hose?
A: Hose diameter, length, water pressure, and any kinks or obstructions affect flow rate.

Q4: What's the conversion factor 448.83?
A: It converts cubic feet per second to gallons per minute (7.48052 gal/ft³ × 60 sec/min).

Q5: How can I increase my hose flow rate?
A: Use a shorter hose, larger diameter hose, or increase water pressure (within safe limits).