How to use this tool
Check the units, enter your values, and run the tool. Results follow the assumptions and method below.
Calculation method
Torsional constant
pi*diameter^4/32Torsional Constant Calculator
Solid circular shaft; this formula does not apply to noncircular sections.
Solid circular shaft; this formula does not apply to noncircular sections.
Result
Enter your values and run the tool to see your result.