Convert pound-force foot [lbf*ft] to dyne millimeter [dyn*mm] Online | Free torque Converter

Pound-Force Foot [lbf·ft]

Pound-force foot (lbf·ft) is a unit of torque or moment of force commonly used in the United States and other countries that employ the imperial system. It measures the rotational force applied at a distance of one foot from a pivot point. Specifically, it represents the torque produced when a force of one pound-force (lbf) is applied perpendicular to a lever arm that is one foot (ft) long.

This unit is widely used in mechanical engineering, automotive industries, and machinery design to quantify twisting forces that cause rotation. For example, when tightening bolts, the torque applied is often specified in lbf·ft to ensure proper fastening without over-tightening. Similarly, engine torque ratings are frequently expressed in pound-force feet, indicating the rotational force an engine can generate.

While the SI unit of torque is the newton-meter (N·m), lbf·ft remains popular in practical applications within the imperial system due to familiarity and ease of use. To convert, 1 lbf·ft equals approximately 1.356 N·m.

Dyne Millimeter [dyn·mm]

Dyne millimeter (dyn·mm) is a unit of torque or moment of force in the centimeter-gram-second (CGS) system of units. It measures the torque produced when a force of one dyne is applied at a distance of one millimeter (mm) from a pivot point. The dyne is a small unit of force, defined as the force required to accelerate a mass of one gram at a rate of one centimeter per second squared.

This unit is commonly used in physics, materials science, and engineering, especially in studies involving very small forces and precise torque measurements such as in micro-mechanics, thin film testing, and small-scale instrument calibration. Because both the dyne and the millimeter are small units, dyn·mm is ideal for quantifying extremely low torques that would be impractical to express in larger units like newton-meters.

In terms of SI units, 1 dyn·mm equals 10⁻⁸ newton-meters (N·m). Despite the predominance of SI units in modern science and engineering, the dyne millimeter remains useful in certain specialized contexts where the CGS system is still preferred for historical reasons or practical convenience.