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 water flow rate through a garden hose based on water velocity and hose cross-sectional area.

Purpose: It helps homeowners and gardeners determine water flow for irrigation, cleaning, or other outdoor water needs.

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 your needs and helps prevent pressure issues in your water system.

4. Using the Calculator

Tips: Enter the water velocity in ft/s and hose cross-sectional area in ft². Typical garden hoses have 5-10 GPM flow at 40-80 psi.

5. Frequently Asked Questions (FAQ)

Q1: What's a typical garden hose flow rate?
A: Most standard garden hoses deliver 5-10 gallons per minute (GPM) at 40-80 psi water pressure.

Q2: How do I find the cross-sectional area?
A: Measure the inner diameter (ID) of your hose and calculate area using π × (ID/2)², then convert to square feet.

Q3: What affects water velocity in a hose?
A: Water pressure, hose length, diameter, and any restrictions (kinks, nozzles) affect velocity.

Q4: Why is 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 (if possible).