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 then converts to gallons.

3. Importance of Pipe Volume Calculation

Details: Accurate volume calculations ensure proper system design, flow rate planning, and chemical dosing in piping systems.

4. Using the Calculator

Tips: Measure the inner diameter (divide by 2 for radius) and length in inches. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why 231 in the formula?
A: 231 cubic inches equals 1 US liquid gallon (standard conversion factor).

Q2: Can I use diameter instead of radius?
A: Yes, but modify the formula to: (π × d² × L) / (4 × 231) where d is diameter.

Q3: Does this work for metric measurements?
A: No, this version is for inches. For metric, use liters and centimeters with different conversion.

Q4: How accurate is this calculation?
A: It assumes perfect cylindrical shape. Real pipes may have slight variations.

Q5: Does this account for pipe thickness?
A: No, you must use the inner radius/diameter only for volume calculations.