Gear Ratio and Torque Multiplication Calculator

Calculate gear ratio, output speed, and torque multiplication for spur, helical, and bevel gear pairs. Determine gear efficiency and power loss at each mesh.

2D stress state at a point. All stresses in MPa.

σx — Normal Stress X (MPa)
σy — Normal Stress Y (MPa)
τxy — Shear Stress (MPa)
⚙ Mechanical Note: Results are based on standard textbook formulas and ISO/AASHTO references. Always verify critical designs with applicable codes (ISO 898, AASHTO 1993, AISC, Eurocode 3) and a qualified engineer.
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How to Use

Enter the values for the patient or scenario you are assessing. Calculate gear ratio, output speed, and torque multiplication for spur, helical, and bevel gear pairs. Determine gear efficiency and power loss at each mesh. Use the gear ratio torque result to inform your clinical assessment.

Frequently Asked Questions