1. What is Pipe Volume Calculator?

Definition: This calculator estimates the volume of liquid a pipe can hold in gallons based on its inner radius and length.

Purpose: It helps plumbers, engineers, and DIYers determine pipe capacity for fluid transport, irrigation, or other applications.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( V_{gal} \) — Volume in gallons
• \( r \) — Inner radius of pipe (inches)
• \( L \) — Length of pipe (inches)
• 231 — Conversion factor (cubic inches per gallon)

Explanation: The formula calculates the cylindrical volume in cubic inches and converts it to gallons.

3. Importance of Pipe Volume Calculation

Details: Accurate volume calculations ensure proper system design, flow rate estimation, and chemical dosing in pipes.

4. Using the Calculator

Tips: Measure the inner radius (half of inner diameter) and length in inches. Both values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why use radius instead of diameter?
A: The formula requires radius (r²), but you can convert diameter by dividing by 2.

Q2: What if my pipe is in feet?
A: Convert feet to inches (1 foot = 12 inches) before entering values.

Q3: Does this account for pipe thickness?
A: No, use inner dimensions only. Outer dimensions include pipe wall thickness.

Q4: What's the 231 conversion factor?
A: It's the cubic inches in one US gallon (231 in³ = 1 gallon).

Q5: Can I use this for non-circular pipes?
A: No, this formula is for circular pipes only. Different formulas exist for other shapes.