Use this Hollow Circular Pipe Section Modulus Calculator to quickly determine the structural strength of round steel pipes. Ideal for engineers, designers, and metal fabricators working on pipe bending and load calculations.
Hollow Circle Pipe Section Modulus Calculator
Moment of Inertia (Ixx = Iyy): —cm⁴
Section Modulus (Sxx = Syy): —cm³
Cross-sectional Area (A): —cm²
Wall Thickness (t): —mm
Section Modulus (Sxx = Syy): —cm³
Cross-sectional Area (A): —cm²
Wall Thickness (t): —mm
Formulas for hollow circular sections:
Ixx = Iyy = π(D⁴ – D₁⁴)/64
Sxx = Syy = 2Ixx/D
A = π(D² – D₁²)/4
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🔹 Overview & Features
This calculator provides:
- Section modulus (Z) and Moment of inertia (I)
- Supports outer and inner diameter input
- Works for steel, aluminum, and other hollow tubes
- Useful for pipe bending, structural analysis, and machine design
- Instant results in mm³, in³, or custom units
🔹 How to Use
- Enter the outer diameter of the pipe
- Enter the wall thickness or inner diameter
- Choose the unit system (metric or imperial)
- Click “Calculate” to get the results
- Use “Reset” to clear all values
🔹 FAQ
Q: Can I use this for plastic pipes?
A: Yes, if you know the dimensions, the formula applies to all hollow cylindrical shapes.
Q: Does it support thick-walled tubes?
A: Yes. It calculates based on exact outer and inner diameters.
Q: Is the calculator accurate for high-pressure pipe systems?
A: It gives geometrical properties, but additional stress checks are required for pressure systems.