Pound-force to Gram-force Converter

A pound-force (lbf) is a unit of force equal to the gravitational force exerted by a mass of one pound under standard Earth gravity. It equals approximately 4.448 newtons and is one of the most common force units in imperial systems.

The pound-force developed from the traditional English pound weight and became standardized for force measurements in countries using imperial units. It provided a practical force unit based on familiar weight measurements, becoming essential in American engineering and industry.

Pound-force is extensively used in the United States for engineering calculations, mechanical specifications, and force measurements. It's standard for bolt torque specifications, mechanical system ratings, material testing, and general engineering applications in imperial systems.

A gram-force (gf) is a unit of force equal to the gravitational force exerted by a mass of one gram under standard Earth gravity. It equals approximately 0.00981 newtons, providing small force measurements in weight-equivalent terms.

The gram-force developed as a subdivision of the kilogram-force for measuring smaller forces. It was particularly useful in precision applications and scientific instruments where forces needed to be expressed in familiar weight-equivalent terms.

Gram-force is occasionally used in precision applications, scientific instruments, and educational contexts where small forces are more easily understood in weight-equivalent terms. However, it's been largely replaced by millinewtons and other SI units in modern applications.