Tube Volume Calculator
How to Calculate Tube Volume
To calculate the volume of a tube (hollow cylinder), you need to use these formulas:
Volume = π × (R² - r²) × L
Where:
- R = outer radius
- r = inner radius
- L = length of the tube
The surface area of a tube includes both inner and outer surfaces:
Total Surface Area = 2π × (R + r) × L + 2π × (R² - r²)
Step-by-Step Instructions
- Measure the outer radius (R) of your tube
- Measure the inner radius (r) of your tube
- Measure the length (L) of the tube
- Input these measurements into the calculator
- Get both volume and surface area results
Applications
- Industrial piping systems
- HVAC ducting
- Plumbing installations
- Heat exchangers
- Structural supports
- Manufacturing processes
Frequently Asked Questions
What's the difference between a tube and a pipe?
While both are hollow cylinders, tubes are typically specified by their outer diameter and wall thickness, while pipes are specified by their inner diameter and schedule (wall thickness).
How do I measure wall thickness accurately?
Use calipers for precise measurements, or subtract the inner diameter from the outer diameter and divide by 2.
Why calculate tube volume?
Tube volume calculations are essential for material requirements, fluid flow capacity, weight calculations, and cost estimation in manufacturing and construction.