Use this engineering calculation for a transparent preliminary estimate or independent arithmetic check when geometry, materials, loads, operating conditions, and units are defined consistently.

Force Newtons (N)

Required number input.

Arm Meters (m)

Required number input.

Angle Degrees (°)

Required number input.

Torque magnitude from force, lever-arm length and angle between force and lever arm. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

Torque Newton Meters (N·m)

The resulting torque newton meters returned as a number.

• A compact formula cannot establish code compliance, safety, durability, manufacturability, or fitness for service. Boundary conditions, material variability, tolerances, dynamic and fatigue effects, environmental exposure, uncertainty, and failure modes may require a fuller model and governing standard.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Check assumptions against drawings, measurements, current material data, and the applicable design code. Apply required load combinations and safety factors, then obtain qualified review and testing for consequential designs.

• Lever Mechanical Advantage

  Ideal lever force advantage from effort-arm length divided by load-arm length.

• Brake Torque Drum

  Ideal drum braking torque from total tangential friction force at the effective friction radius.

• Butt Weld Stress

  Average axial stress across a full-penetration butt weld from applied force divided by weld length and thickness.